CVE-2023-27491

MEDIUM

Published 2023-04-04T18:18:23.433Z

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CVSS Score

V3.1

5.4

/10

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

Base Score Metrics

Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14

0.000

probability

of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25

Exploit Probability

Percentile: 0.026

Higher than 2.6% of all CVEs

Attack Vector Metrics

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Impact Metrics

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

envoyproxy

envoy

Affected Versions:

>= 1.25.0, < 1.25.3 >= 1.24.0, < 1.24.4 >= 1.23.0, < 1.23.6 < 1.22.9

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp

https://datatracker.ietf.org/doc/html/rfc9113#section-8.3

https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1

https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2

Published: 2023-04-04T18:18:23.433Z

Last Modified: 2025-02-11T16:14:43.908Z

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