{"cve":"CVE-2024-53271","nvd":{"published":"2024-12-18T20:15:24.433","modified":"2026-06-17T08:08:43.817","status":"Analyzed","description":"Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions envoy  does not properly handle http 1.1 non-101 1xx responses. This can lead to downstream failures in networked devices. This issue has been addressed in versions 1.31.5 and 1.32.3. Users are advised to upgrade. There are no known workarounds for this issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","score":7.1},"cwes":["CWE-670"],"references":["https://github.com/envoyproxy/envoy/commit/da56f6da63079baecef9183436ee5f4141a59af8","https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f","https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f"],"products":["envoyproxy:envoy"],"source":"nvd","synced_at":"2026-10-19T21:57:56.913276502+00:00"},"epss":{"cve":"CVE-2024-53271","score":0.00618,"percentile":0.49645,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}