CVE-2023-22912

MEDIUM

MediaWiki <1.35.9, <1.38.5, <1.39.1 - Info Disclosure

Title source: llm

Description

An issue was discovered in MediaWiki before 1.35.9, 1.36.x through 1.38.x before 1.38.5, and 1.39.x before 1.39.1. CheckUser TokenManager insecurely uses AES-CTR encryption with a repeated (aka re-used) nonce, allowing an adversary to decrypt.

References (1)

[Exploit, Issue Tracking, Patch, Vendor Advisory] https://phabricator.wikimedia.org/T315123

Scores

CVSS v3 5.3

EPSS 0.0011

EPSS Percentile 28.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-330

Status published

Products (2)

mediawiki/mediawiki 1.39.0 (3 CPE variants)

mediawiki/mediawiki < 1.35.9

Published Jan 20, 2023

Tracked Since Feb 18, 2026