CVE-2023-52892

7.5 HIGH
Published: June 27, 2024 Modified: October 22, 2025

Description

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/phpseclib/phpseclib/issues/1943
Source: cve@mitre.org
Exploit Issue Tracking
https://github.com/phpseclib/phpseclib/issues/1943
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking
https://github.com/phpseclib/phpseclib/releases/tag/3.0.33
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://github.com/x509-name-testing/name_testing_artifacts
Source: af854a3a-2127-422b-91ae-364da2661108
Not Applicable

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.2%
40th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

phpseclib