{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"1.36.0","last_affected":"1.36.4"},{"introduced":"1.35.0","last_affected":"1.35.8"},{"introduced":"0","last_affected":"1.34.12"}],"component":"github.com/envoyproxy/envoy","cve_ids":["CVE-2026-26309"],"ecosystem":"Go","epss":0.00432,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-56cj-wgg3-x943","id":"tcs_01M5KEXSMKRBQPHVQKHMXSDSR2","modified_at":"2026-03-13T20:26:07.599912Z","published_at":"2026-03-10T18:30:58Z","references":["https://osv.dev/vulnerability/GHSA-56cj-wgg3-x943","https://github.com/envoyproxy/envoy/security/advisories/GHSA-56cj-wgg3-x943","https://nvd.nist.gov/vuln/detail/CVE-2026-26309","https://github.com/envoyproxy/envoy"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-56cj-wgg3-x943","url":"https://osv.dev/vulnerability/GHSA-56cj-wgg3-x943"}],"summary":"Envoy affected by off-by-one write in JsonEscaper::escapeString()"}