{"id":"CVE-2026-73549","summary":"Envoy - Incomplete fix for CVE-2026-26310: copyInternetAddressAndPort crashes on scoped IPv6 addresses in ORIGINAL_DST clusters","details":"Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's Utility::copyInternetAddressAndPort and QUIC client-address paths reconstruct scoped IPv6 addresses through addressAsString and Ipv6Instance. The string includes a percent scope identifier that inet_pton cannot parse, causing an exception or abort. Kernel-provided scoped IPv6 destinations in ORIGINAL_DST transparent-proxy deployments, and affected QUIC connection paths, can therefore terminate the process. The relevant scope boundary is that the HTTP use_http_header override rejects scoped addresses earlier; the advisory's crash path requires a kernel-provided original destination or the affected QUIC path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.","aliases":["GHSA-jp5f-qr64-c9vw"],"modified":"2026-09-24T03:45:56.093129016Z","published":"2026-09-21T19:42:48.561Z","related":["openSUSE-SU-2026:11630-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-754"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73549.json"},"references":[{"type":"WEB","url":"https://github.com/envoyproxy/envoy/releases/tag/v1.36.10"},{"type":"WEB","url":"https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"},{"type":"WEB","url":"https://github.com/envoyproxy/envoy/releases/tag/v1.38.4"},{"type":"WEB","url":"https://github.com/envoyproxy/envoy/releases/tag/v1.39.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73549.json"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-jp5f-qr64-c9vw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73549"},{"type":"FIX","url":"https://github.com/envoyproxy/envoy/commit/109e5a5b08ad10d99074cefd55a747a16ee64da7"},{"type":"FIX","url":"https://github.com/envoyproxy/envoy/commit/59b1744a6cb62746db418ac06fc5e359fd25fdb7"},{"type":"FIX","url":"https://github.com/envoyproxy/envoy/commit/6e39f4c94deff7a60d382c2d95883e0ea49ff691"},{"type":"FIX","url":"https://github.com/envoyproxy/envoy/commit/ab2dca2d65b079768230a7c3d825afeefa330215"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/envoyproxy/envoy","events":[{"introduced":"0"},{"introduced":"6d9bb7d9a85d616b220d1f8fe67b61f82bbdb8d3"},{"introduced":"f1dd21b16c244bda00edfb5ffce577e12d0d2ec2"},{"introduced":"8eea3285d6bdb89f8ea34632cfe7ce1608a8f374"},{"fixed":"053a8989382dd91542ecf0cef8f379b9cb761cdd"},{"fixed":"cf413bdb37b36d3ffbe570b8a48760abe2b588f5"},{"fixed":"ef2d997c1b022cf8b849a1d3521fbf234d79ca26"},{"fixed":"b579d07d3ad7ee11d32b105e91a5a39ad24718d7"},{"fixed":"109e5a5b08ad10d99074cefd55a747a16ee64da7"},{"fixed":"59b1744a6cb62746db418ac06fc5e359fd25fdb7"},{"fixed":"6e39f4c94deff7a60d382c2d95883e0ea49ff691"},{"fixed":"ab2dca2d65b079768230a7c3d825afeefa330215"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.36.10"},{"introduced":"1.37.0"},{"fixed":"1.37.6"},{"introduced":"1.38.0"},{"fixed":"1.38.4"},{"introduced":"1.39.0"},{"fixed":"1.39.1"}]}}],"versions":["v1.39.0","v1.36.9","v1.38.3","v1.37.5","v1.38.2","v1.37.4","v1.36.8","v1.38.1","v1.37.3","v1.36.7","v1.38.0","v1.37.2","v1.36.6","v1.37.1","v1.36.5","v1.37.0","v1.36.4","v1.36.3","v1.36.2","v1.36.1","v1.36.0","v1.35.0","v1.34.0","v1.33.0","v1.32.0","v1.31.0","v1.30.0","v1.29.0","v1.28.0","v1.27.0","v1.26.0","v1.25.0","v1.24.0","v1.23.0","v1.22.0","v1.21.0","v1.20.0","v1.19.0","v1.18.2","v1.18.1","v1.18.0","v1.17.0","v1.16.0","v1.15.0","v1.14.0","v1.13.0","v1.12.0","v1.11.0","v1.10.0","v1.9.0","v1.8.0","v1.7.0","v1.6.0","v1.5.0","v1.4.0","v1.3.0","v1.2.0","v1.1.0","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73549.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}