[CISA-2026:0423] CISA Adds One Known Exploited Vulnerability to Catalog (https://secdb.nttzen.cloud/security-advisory/detail/CISA-2026:0423)CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise.️ CVE-2026-39987 (https://secdb.nttzen.cloud/cve/detail/CVE-2026-39987)- Name: Marimo Remote Code Execution Vulnerability- Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: Marimo- Product: Marimo- Notes: https://github.com/marimo-team/marimo/security/advisories/GHSA-2679-6mx9-h9xc ; https://nvd.nist.gov/vuln/detail/CVE-2026-39987#SecDB #InfoSec #CVE #CISA_KEV #cisa_20260423 #cisa20260423 #cve_2026_39987 #cve202639987
