{"action":"Upgrade github.com/envoyproxy/envoy to 1.34.13 or later.","affected":[{"fixed":"1.37.1","introduced":"1.37.0"},{"fixed":"1.36.5","introduced":"1.36.0"},{"fixed":"1.35.9","introduced":"1.35.0"},{"fixed":"1.34.13","introduced":"0"}],"component":"github.com/envoyproxy/envoy","cve_ids":["CVE-2026-26308"],"ecosystem":"Go","epss":0.00298,"exploited":false,"fixed_versions":["1.37.1","1.36.5","1.35.9","1.34.13"],"ghsa_id":"GHSA-ghc4-35x6-crw5","id":"tcs_01M5KFB0EXBTGHZFPM7ACF1DE2","modified_at":"2026-04-13T17:46:32.629556Z","published_at":"2026-03-10T18:30:42Z","references":["https://osv.dev/vulnerability/GHSA-ghc4-35x6-crw5","https://github.com/envoyproxy/envoy/security/advisories/GHSA-ghc4-35x6-crw5","https://nvd.nist.gov/vuln/detail/CVE-2026-26308","https://github.com/envoyproxy/envoy/commit/b6ba0b2294b98484fb0ed8556897d1073cc27867","https://github.com/envoyproxy/envoy"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-ghc4-35x6-crw5","url":"https://osv.dev/vulnerability/GHSA-ghc4-35x6-crw5"}],"summary":"Envoy has RBAC Header Validation Bypass via Multi-Value Header Concatenation"}