{"id":"CVE-2026-65604","title":"Skipper contains an incomplete fix for CVE-2026-50197 in which oversized request bodies bypass Open Policy Agent (OPA) deny-on-presence Rego policies","summary":"Skipper contains an incomplete fix for CVE-2026-50197 in which oversized request bodies bypass Open Policy Agent (OPA) deny-on-presence Rego policies. When a request body exceeds the configured maxBodyBytes limit, Skipper forwards the fu…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","cwe":["CWE-20"],"vendor":"zalando","product":"skipper","affected":["skipper (all versions)"],"published":"2026-07-23","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:29.370","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-65604","references":[{"url":"https://github.com/zalando/skipper/security/advisories/GHSA-8qqm-fp2q-v734","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/skipper-incomplete-fix-for-cve-2026-50197-policy-bypass","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zalando/skipper/security/advisories/GHSA-8qqm-fp2q-v734","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-24T14:03:58.021319Z"},"epss":0.0039,"epssPercentile":0.3101,"ingestedAt":"2026-10-08T16:52:14.708Z","slug":"CVE-2026-65604","body":"## Overview\n\nSkipper contains an incomplete fix for CVE-2026-50197 in which oversized request bodies bypass Open Policy Agent (OPA) deny-on-presence Rego policies. When a request body exceeds the configured maxBodyBytes limit, Skipper forwards the full payload to the upstream service while OPA evaluates against an empty parsed_body, so policies that deny requests based on body content are not enforced and forbidden actions proceed. No fixed version is available; v0.27.26 adds documentation guidance only.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}