{"action":"Upgrade github.com/envoyproxy/envoy to 1.33.13 or later.","affected":[{"fixed":"1.36.3","introduced":"1.36.0"},{"fixed":"1.35.7","introduced":"1.35.0"},{"fixed":"1.34.11","introduced":"1.34.0"},{"fixed":"1.33.13","introduced":"0"}],"component":"github.com/envoyproxy/envoy","cve_ids":["CVE-2025-66220"],"ecosystem":"Go","epss":0.00168,"exploited":false,"fixed_versions":["1.36.3","1.35.7","1.34.11","1.33.13"],"ghsa_id":"GHSA-rwjg-c3h2-f57p","id":"tcs_01M5KFNAVKRZY9ZZ61RJXZYAP9","modified_at":"2025-12-06T12:29:15.569514Z","published_at":"2025-12-05T18:14:02Z","references":["https://osv.dev/vulnerability/GHSA-rwjg-c3h2-f57p","https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p","https://nvd.nist.gov/vuln/detail/CVE-2025-66220","https://github.com/envoyproxy/envoy"],"severity":{"label":"medium","score":5},"sources":[{"source":"osv","source_id":"GHSA-rwjg-c3h2-f57p","url":"https://osv.dev/vulnerability/GHSA-rwjg-c3h2-f57p"}],"summary":"Envoy's TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte"}