CVE-2024-53271 | BDVDB-2026-259702 Detail

envoyproxyenvoy

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-670 Always-Incorrect Control Flow Implementation

References#

Exploit#

No public exploit known

History#

Version 12024-12-18Record published in the CVE List.

Published

Published: 2024-12-18
Last modified: 2024-12-18

Vendor information

Vendor: envoyproxy
Product: envoy

All envoyproxy vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 50.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 1.31.0, < 1.31.5
Fixed
Not stated
Vulnerable
>= 1.32.0, < 1.32.3
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.1 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).