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  3. #Mythos finds a #curl vulnerability

#Mythos finds a #curl vulnerability

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  • bagder@mastodon.socialB bagder@mastodon.social

    #Mythos finds a #curl vulnerability

    yes, as in singular one.

    Link Preview Image
    Mythos finds a curl vulnerability

    yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue reading Mythos finds a curl vulnerability →

    favicon

    daniel.haxx.se (daniel.haxx.se)

    doragasu@mastodon.sdf.orgD This user is from outside of this forum
    doragasu@mastodon.sdf.orgD This user is from outside of this forum
    doragasu@mastodon.sdf.org
    wrote last edited by
    #31

    @bagder In line with what this blog post stated shortly after it was announced: the model is nothing special and much cheaper models can find the same bugs. Marketing BS turned to 11. https://www.flyingpenguin.com/the-boy-that-cried-mythos-verification-is-collapsing-trust-in-anthropic/

    1 Reply Last reply
    0
    • bagder@mastodon.socialB bagder@mastodon.social

      @gnirre I do not explain that at all because I don't have enough knowledge to do so.

      gnirre@mastodon.socialG This user is from outside of this forum
      gnirre@mastodon.socialG This user is from outside of this forum
      gnirre@mastodon.social
      wrote last edited by
      #32

      @bagder Did Anthropic know that you finally had gotten access to Mythos?

      bagder@mastodon.socialB 1 Reply Last reply
      0
      • gnirre@mastodon.socialG gnirre@mastodon.social

        @bagder Did Anthropic know that you finally had gotten access to Mythos?

        bagder@mastodon.socialB This user is from outside of this forum
        bagder@mastodon.socialB This user is from outside of this forum
        bagder@mastodon.social
        wrote last edited by
        #33

        @gnirre no idea, probably not

        gnirre@mastodon.socialG 1 Reply Last reply
        0
        • bagder@mastodon.socialB bagder@mastodon.social

          #Mythos finds a #curl vulnerability

          yes, as in singular one.

          Link Preview Image
          Mythos finds a curl vulnerability

          yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue reading Mythos finds a curl vulnerability →

          favicon

          daniel.haxx.se (daniel.haxx.se)

          spitfire@mastodon.deS This user is from outside of this forum
          spitfire@mastodon.deS This user is from outside of this forum
          spitfire@mastodon.de
          wrote last edited by
          #34

          @bagder one? wow, that really was worth burning the planet's resources. 😆

          1 Reply Last reply
          0
          • quinn@social.circl.luQ quinn@social.circl.lu

            @bagder I suspect the question is, will it still be a worthwhile tool when the actual price to use the tool, not subsidized by anyone's war chest or VC, is revealed?

            kleisli@mastodon.socialK This user is from outside of this forum
            kleisli@mastodon.socialK This user is from outside of this forum
            kleisli@mastodon.social
            wrote last edited by
            #35

            @quinn my current opinion: for security scans and reviews, AI tools are and will be useful, but not to generate code. @bagder

            quinn@social.circl.luQ 1 Reply Last reply
            0
            • bagder@mastodon.socialB bagder@mastodon.social

              @gnirre no idea, probably not

              gnirre@mastodon.socialG This user is from outside of this forum
              gnirre@mastodon.socialG This user is from outside of this forum
              gnirre@mastodon.social
              wrote last edited by
              #36

              @bagder Maybe my question should have been if Alpha Omega knew? Your access was "inofficial"?

              bagder@mastodon.socialB 1 Reply Last reply
              0
              • gnirre@mastodon.socialG gnirre@mastodon.social

                @bagder Maybe my question should have been if Alpha Omega knew? Your access was "inofficial"?

                bagder@mastodon.socialB This user is from outside of this forum
                bagder@mastodon.socialB This user is from outside of this forum
                bagder@mastodon.social
                wrote last edited by
                #37

                @gnirre I don't know how much they asked or told A about when this was done. It's not "my" access, someone else has the access and ran the analysis

                1 Reply Last reply
                0
                • kleisli@mastodon.socialK kleisli@mastodon.social

                  @quinn my current opinion: for security scans and reviews, AI tools are and will be useful, but not to generate code. @bagder

                  quinn@social.circl.luQ This user is from outside of this forum
                  quinn@social.circl.luQ This user is from outside of this forum
                  quinn@social.circl.lu
                  wrote last edited by
                  #38

                  @kleisli @bagder
                  if it's something like 10,000 euros a pop, it might not be worth security scans and reviews, except for governmental clients.

                  0x0@hachyderm.io0 1 Reply Last reply
                  0
                  • synlogic4242@social.vivaldi.netS synlogic4242@social.vivaldi.net

                    @bagder b-b-b-but curl is not in Rust!

                    frankgevaerts@mastodon.socialF This user is from outside of this forum
                    frankgevaerts@mastodon.socialF This user is from outside of this forum
                    frankgevaerts@mastodon.social
                    wrote last edited by
                    #39

                    @synlogic4242 @bagder Yes, someone really needs to get on to that rewriting thing. Just a pity there hasn't been a weekend in *years* so nobody had the chance!

                    1 Reply Last reply
                    0
                    • quinn@social.circl.luQ quinn@social.circl.lu

                      @kleisli @bagder
                      if it's something like 10,000 euros a pop, it might not be worth security scans and reviews, except for governmental clients.

                      0x0@hachyderm.io0 This user is from outside of this forum
                      0x0@hachyderm.io0 This user is from outside of this forum
                      0x0@hachyderm.io
                      wrote last edited by
                      #40

                      @quinn

                      Especially if it's subscription-based, as these models seem to be good at finding only specific sets of problems and then dry out, but even 10k per use is really gov or big corpo territory.

                      @kleisli @bagder

                      quinn@social.circl.luQ 1 Reply Last reply
                      0
                      • bagder@mastodon.socialB bagder@mastodon.social

                        My personal conclusion can however not end up with anything else than that the big hype around this model so far was primarily marketing. I see no evidence that this setup finds issues to any particular higher or more advanced degree than the other tools have done before Mythos. Maybe this model is a little bit better, but even if it is, it is not better to a degree that seems to make a significant dent in code analyzing.

                        redsakana@infosec.exchangeR This user is from outside of this forum
                        redsakana@infosec.exchangeR This user is from outside of this forum
                        redsakana@infosec.exchange
                        wrote last edited by
                        #41

                        @bagder This suggests a fun exercise for someone interested in messing around with LLMs:

                        1. Put back all the curl security issues previously found by LLM tools by dropping the fix commits from history or otherwise obfuscating the revert.

                        2. Feed the re-vulnerabilized repo to a selection of models and see what are the cheapest ones (by memory, time and/or monetary cost) that can find, say, 50%/75%/100% of the issues found by the warehouse-scale "foundation models".

                        Feels like a large part of the current results should be doable with significantly smaller resources, because being trained on every tweet and reddit post and libgen book ever is not obviously related to the task.

                        utf_7@mastodon.socialU 1 Reply Last reply
                        0
                        • bagder@mastodon.socialB bagder@mastodon.social

                          #Mythos finds a #curl vulnerability

                          yes, as in singular one.

                          Link Preview Image
                          Mythos finds a curl vulnerability

                          yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue reading Mythos finds a curl vulnerability →

                          favicon

                          daniel.haxx.se (daniel.haxx.se)

                          eobet@oldbytes.spaceE This user is from outside of this forum
                          eobet@oldbytes.spaceE This user is from outside of this forum
                          eobet@oldbytes.space
                          wrote last edited by
                          #42

                          @bagder great, so even the Linux Foundation are naming things after the ultimate evil of a famous franchise? (Final Fantasy in this instance.)

                          1 Reply Last reply
                          0
                          • bagder@mastodon.socialB bagder@mastodon.social

                            #Mythos finds a #curl vulnerability

                            yes, as in singular one.

                            Link Preview Image
                            Mythos finds a curl vulnerability

                            yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue reading Mythos finds a curl vulnerability →

                            favicon

                            daniel.haxx.se (daniel.haxx.se)

                            phl@mastodon.socialP This user is from outside of this forum
                            phl@mastodon.socialP This user is from outside of this forum
                            phl@mastodon.social
                            wrote last edited by
                            #43

                            @bagder “On average, every single production source code line of curl has been written (and then rewritten) 4.14 times.”

                            curl is the ship of Theseus not once, not twice, but four times 😄

                            1 Reply Last reply
                            0
                            • gnirre@mastodon.socialG gnirre@mastodon.social

                              @bagder How do you explain that Mythos found 271 bugs in Firefox, and counting, and only 1 in cURL. Is the Firefox code base 271 times larger?

                              4censord@unfug.social4 This user is from outside of this forum
                              4censord@unfug.social4 This user is from outside of this forum
                              4censord@unfug.social
                              wrote last edited by
                              #44

                              @gnirre @bagder with the most glancing of looks, looking at the 150 version of firefox (and some rounding),
                              curl: 200k lines of c
                              firefox:

                              • 5M lines of rust
                              • 9M lines of C and C++
                              • 200k lines of assembly
                              • 2M lines of python

                              so like, without looking at anything else, firefox is significantly bigger

                              natanox@chaos.socialN 1 Reply Last reply
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                              • km@mastodon.babb.noK km@mastodon.babb.no

                                @bagder from my talks with people who had been given access to mythos in their org, they say it does find things which current tools miss, but also overlooks cases which current tools catch. so, yeah, to me it is "mostly marketing" combined with general FUD

                                paco@infosec.exchangeP This user is from outside of this forum
                                paco@infosec.exchangeP This user is from outside of this forum
                                paco@infosec.exchange
                                wrote last edited by
                                #45

                                @km As far as I can tell:

                                • No one who has worked with raw Mythos output has ever written about it.
                                • No one who has written about it has ever used it.

                                They would much rather have @bagder writing about it because his opinion carries weight. That means he can’t have direct access. To give him access, they’d demand to gag him with an NDA, like everyone else who has access.

                                This technique of making readers mentally fill in the gaps between what is verifiable and what is claimed is genius marketing and really dishonest. But we have come to expect systematic and casual dishonesty from these companies.

                                km@mastodon.babb.noK 1 Reply Last reply
                                0
                                • paco@infosec.exchangeP paco@infosec.exchange

                                  @km As far as I can tell:

                                  • No one who has worked with raw Mythos output has ever written about it.
                                  • No one who has written about it has ever used it.

                                  They would much rather have @bagder writing about it because his opinion carries weight. That means he can’t have direct access. To give him access, they’d demand to gag him with an NDA, like everyone else who has access.

                                  This technique of making readers mentally fill in the gaps between what is verifiable and what is claimed is genius marketing and really dishonest. But we have come to expect systematic and casual dishonesty from these companies.

                                  km@mastodon.babb.noK This user is from outside of this forum
                                  km@mastodon.babb.noK This user is from outside of this forum
                                  km@mastodon.babb.no
                                  wrote last edited by
                                  #46

                                  @paco @bagder yeah, let me clarify: i talked with people who not themselves used mythos, but whose org was given access, so yeah, they just told something which they were told

                                  paco@infosec.exchangeP 1 Reply Last reply
                                  0
                                  • 4censord@unfug.social4 4censord@unfug.social

                                    @gnirre @bagder with the most glancing of looks, looking at the 150 version of firefox (and some rounding),
                                    curl: 200k lines of c
                                    firefox:

                                    • 5M lines of rust
                                    • 9M lines of C and C++
                                    • 200k lines of assembly
                                    • 2M lines of python

                                    so like, without looking at anything else, firefox is significantly bigger

                                    natanox@chaos.socialN This user is from outside of this forum
                                    natanox@chaos.socialN This user is from outside of this forum
                                    natanox@chaos.social
                                    wrote last edited by
                                    #47

                                    @4censord @gnirre @bagder Also, didn't they intentionally disable all mitigations, sandboxing etc. in Firefox *and* include every teeny tiny bug it found (without mentioning the false-positives, which were probably a metric shit ton) to bolster those numbers?

                                    There were lots of shenanigans afaik.

                                    1 Reply Last reply
                                    0
                                    • km@mastodon.babb.noK km@mastodon.babb.no

                                      @paco @bagder yeah, let me clarify: i talked with people who not themselves used mythos, but whose org was given access, so yeah, they just told something which they were told

                                      paco@infosec.exchangeP This user is from outside of this forum
                                      paco@infosec.exchangeP This user is from outside of this forum
                                      paco@infosec.exchange
                                      wrote last edited by
                                      #48

                                      @km Yeah. I didn’t mean it personally. I wasn’t criticising what you said, I’m sorry if I sounded that way.

                                      I was just pointing out this constant theme. The only thing that ever is made public is the fully-polished, human-vetted final result. They carefully hide all other details and the press don’t care.

                                      @bagder

                                      1 Reply Last reply
                                      0
                                      • 0x0@hachyderm.io0 0x0@hachyderm.io

                                        @quinn

                                        Especially if it's subscription-based, as these models seem to be good at finding only specific sets of problems and then dry out, but even 10k per use is really gov or big corpo territory.

                                        @kleisli @bagder

                                        quinn@social.circl.luQ This user is from outside of this forum
                                        quinn@social.circl.luQ This user is from outside of this forum
                                        quinn@social.circl.lu
                                        wrote last edited by
                                        #49

                                        @0x0 @kleisli @bagder to be clear i picked that number out of my butt, but it is clear to me that it's going to be very hard to make up their investment in it, much less than the min 10x (which would probably be a couple trillion dollars)

                                        1 Reply Last reply
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                                        • rugk@chaos.socialR This user is from outside of this forum
                                          rugk@chaos.socialR This user is from outside of this forum
                                          rugk@chaos.social
                                          wrote last edited by
                                          #50

                                          @das_robin @oots @bagder maybe @firefoxnightly can comment on that

                                          1 Reply Last reply
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