CVE-2023-22912 json
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.
published 2023-01-20 3 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2023-22912 , EUVD-2023-27014
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami mediawiki 1.35.9, 1.38.5, 1.39.1
- mediawiki mediawiki 1.35.9, 1.38.5
- phabricator.wikimedia.org/T315123 advisory
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- phabricator.wikimedia.org https://phabricator.wikimedia.org/T315123 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mediawiki | <1.35.9 >=1.36.0, <1.38.5 >=1.39.0, <1.39.1 |
1.35.9 1.38.5 1.39.1 |
Classification
- Weakness
-
- CWE-330 Use of Insufficiently Random Values
References
-
phabricator.wikimedia.org
/T315123
exploit, issue-tracking, patch, vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2023-22912
web
Sources
- CVE List CVE-2023-22912
- NVD CVE-2023-22912
- OSV BIT-mediawiki-2023-22912
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.