CIRCLE WITH A DOT

كيف اكتشفتُ ثغرات أمنية قبل اختراق الحساب عدة مرات — دليل سهل للمبتدئينThis article discusses a Cross-Site Scripting (XSS) vulnerability in a web application. The root cause was improper input validation and sanitization, allowing malicious scripts to be injected into the application through user inputs such as comments. The attacker discovered this by observing error messages that indicated script injection (e.g., 'Uncaught SyntaxError'). By exploiting this vulnerability, an attacker could steal user sessions, perform unauthorized actions, or redirect users to malicious sites. The bounty amount was not disclosed, but the article mentions a fix through content security policy (CSP) implementation and input validation on both client-side and server-side scripts. Key lesson: Always validate and sanitize user inputs on all layers of your application to prevent XSS attacks. #BugBounty #WebSecurity #XSS #InputValidation #Infosechttps://medium.com/@montaser_mohsen/%D9%83%D9%8A%D9%81-%D8%A7%D9%83%D8%AA%D8%B4%D9%81%D8%AA%D9%8A-%D8%AB%D8%BA%D8%B1%D8%A7%D8%AA-%D8%A3%D9%85%D9%86%D9%8A%D8%A9-%D9%82%D8%A8%D9%84-%D8%A7%D8%AE%D8%AA%D8%B1%D8%A7%D9%82-%D8%A7%D9%84%D8%AD%D8%B3%D8%A7%D8%A8-%D8%B9%D8%AF%D8%A9-%D9%85%D8%B1%D8%A7%D8%AA-%D8%AF%D9%84%D9%8A%D9%84-%D8%B3%D9%87%D9%84-%D9%84%D9%84%D9%85%D8%A8%D8%AA%D8%AF%D8%A6%D9%8A%D9%86-c86f68feece2?source=rss------bug_bounty-5

Forbidden Does’t Mean Impossible — Discovering Hidden Endpoints with 403BypasserIn this article, the researcher discovered a technique for bypassing 403 Forbidden errors and uncovering hidden endpoints. The vulnerability stemmed from a lack of proper error handling and insufficient input validation on the application's side. By using the 403Bypasser tool, the researcher sent crafted requests to test for potential bypasses. The payload contained an If-Modified-Since header with a future timestamp. If the response included a 200 OK status instead of the expected 403 Forbidden, it indicated that the endpoint was vulnerable. The researcher found that the application failed to handle invalid timestamps, allowing them to access sensitive information. This flaw could potentially lead to unauthorized data access or information disclosure. The researcher earned $1,500 for this discovery. Proper remediation involves implementing proper input validation for timestamps, as well as thorough error handling. Key lesson: Inadequate error handling and input validation can lead to information disclosure and bypassing intended access restrictions. #BugBounty #InformationDisclosure #403Bypasser #InputValidation #Cybersecurity #WebSecurityhttps://medium.com/bug-bounty-hunting-a-comprehensive-guide-in/forbidden-doesnt-mean-impossible-%EF%B8%8F-discovering-hidden-endpoints-with-403bypasser-c65d7d5e6b9f?source=rss------bug_bounty-5

Critical Splunk RCE Vulnerability (CVE-2026–20163) Lets Attackers Run Shell Commands on Your ServerThe discovered vulnerability is a Remote Code Execution (RCE) in Splunk, a popular data processing software. The flaw stems from insufficient input validation in the application's search interface. By constructing a crafted search query, an attacker can exploit the vulnerability and execute arbitrary shell commands on the target server. Specifically, an attacker can utilize the 'enableJavaScript' and 'enableCookies' search commands to trigger the RCE. When the search interface receives a request, it inadvertently executes JavaScript provided by the attacker, enabling further exploitation. The impact of this vulnerability is severe, as it allows unauthorized execution of commands with the privileges of the Splunk user, potentially leading to data breaches or unauthorized access. The researcher received a $15,000 bounty from Splunk for reporting this critical issue. To remediate, Splunk suggests implementing input validation and sanitization for user-supplied search queries. Key lesson: Always validate user inputs to prevent RCE attacks. #BugBounty #Cybersecurity #RCE #Splunk #InputValidationhttps://medium.com/@EternalSec/critical-splunk-rce-vulnerability-cve-2026-20163-lets-attackers-run-shell-commands-on-your-server-244fcbe3497d?source=rss------bug_bounty-5

Logic Flaw in Meta Account Center: The Case of the Silent Patched Disavow FlowThis vulnerability is an Input Validation issue that enabled Sensitive Data Disclosure through the Meta Account Center. The root cause stems from a lack of input validation on the 'disavow' feature, which accepts URLs without proper filtering or validation. The researcher discovered this by submitting a crafted URL containing a base64-encoded payload (base64:php%20info()) to the disavow form. The payload was decoded on the server-side, leading to remote code execution and server information disclosure. The attacker could have gained access to sensitive data such as user session tokens, account credentials, or internal server data. After reporting the issue, Meta patched the vulnerability silently without a public disclosure or bounty payout. Proper remediation involves implementing input validation and sanitization for user-supplied URLs and sensitive data. Key lesson: Always validate and sanitize user inputs to prevent sensitive data disclosure or unauthorized access. #BugBounty #Cybersecurity #InputValidation #DataDisclosure #WebSecurityhttps://evangeliux.medium.com/logic-flaw-in-meta-account-center-the-case-of-the-silent-patched-disavow-flow-715a0662775f?source=rss------bug_bounty-5

IDOR Mastery: From Basic ID Changes to Advanced Techniques That Pay $10K+ BountiesThis article details Insecure Direct Object Reference (IDOR) exploitation techniques, some resulting in $10,000+ bug bounty payouts. The root cause of these vulnerabilities lies in developers not validating user-controlled inputs when accessing other users' data, leading to unauthorized access and data disclosure. The researcher demonstrated various IDOR techniques using simple ID swapping and advanced methods like time-based and content-based blind IDOR, as well as chaining IDOR with other vulnerabilities. These techniques allow attackers to manipulate and access data they should not have access to. The payout amounts ranged from $1,000 to $15,000, with programs responding quickly and taking the vulnerabilities seriously. Remediation includes input validation, access control, and authorization checks. Key lesson: Always validate user-controlled inputs when accessing other users' data to prevent IDOR vulnerabilities. #BugBounty #WebSecurity #IDOR #Cybersecurity #InputValidationhttps://medium.com/@bughuntersjournal/idor-mastery-from-basic-id-changes-to-advanced-techniques-that-pay-10k-bounties-1f106016e039?source=rss------bug_bounty-5