{"id":"CVE-2026-50197","aliases":["GHSA-659f-rgp5-w4wf","GO-2026-5944"],"url":"https://o3.security/vulnerability/CVE-2026-50197","summary":"Skipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requests","details":"Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.26.10, zalando/skipper's OpenPolicyAgent integration silently bypasses request-body inspection on HTTP/1.1 Transfer-Encoding: chunked and HTTP/2 requests that omit the content-length pseudo-header, because the opaAuthorizeRequestWithBody filter and OpenPolicyAgentInstance.ExtractHttpBodyOptionally in filters/openpolicyagent/openpolicyagent.go produce an empty raw_body and input.parsed_body while the upstream service receives the full attacker-controlled body. This issue is fixed in version 0.26.10.","published":"2026-07-17T19:23:43.574Z","modified":"2026-08-12T03:51:23.162845055Z","cvss":null,"epss":{"score":0.0055,"percentile":0.43801,"asOf":"2026-08-31"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/zalando/skipper","fixedVersion":"0.26.10"}],"fix":{"url":"https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23","label":"zalando/skipper@3152f3b"},"references":[{"type":"WEB","url":"https://github.com/zalando/skipper/releases/tag/v0.26.10"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50197.json"},{"type":"ADVISORY","url":"https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50197"},{"type":"FIX","url":"https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23"},{"type":"FIX","url":"https://github.com/zalando/skipper/pull/4041"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:23.162845055Z"}}