CVE-2026-65604
8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
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 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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-20: Improper Input Validation
References
- https://github.com/zalando/skipper/security/advisories/GHSA-8qqm-fp2q-v734
- https://www.vulncheck.com/advisories/skipper-incomplete-fix-for-cve-2026-50197-policy-bypass
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