CVE-2024-53271

HTTP/1.1 multiple issues with envoy.reloadable_features.http1_balsa_delay_reset in envoy

At a glance

Severity: HIGH 7.1
EPSS: EPSS 0.62 % · percentile 49 (2026-10-28)
State: PUBLISHED
Published: 2024-12-18
Updated: 2024-12-18
Assigner: GitHub_M
NVD 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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H	GitHub_M
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H	NVD · security-advisories@github.com (Secondary)

Weaknesses (CWE)

CWE-670

European references

ENISA EUVD · EUVD-2024-51926
GCVE · GCVE-0-2024-53271

Affected configurations (NVD CPE)

cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* ≥ 1.31.0 < 1.31.5
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* ≥ 1.32.0 ≤ 1.32.3

Affected products

Product	Versions
envoyproxy · envoy	affected >= 1.31.0, < 1.31.5 ; affected >= 1.32.0, < 1.32.3

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD