CVE-2024-53271

7.1 highEPSS 0.6%

High (7.1) in envoyproxy envoy. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE: CWE-670
Published: 2024-12-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

envoyproxy:envoy

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

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