CVE-2022-28203 json
A denial-of-service issue was discovered in MediaWiki before 1.35.6, 1.36.x before 1.36.4, and 1.37.x before 1.37.2.
published 2022-09-19 4 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2022-28203 , EUVD-2022-32657
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
A denial-of-service issue was discovered in MediaWiki before 1.35.6, 1.36.x before 1.36.4, and 1.37.x before 1.37.2. When many files exist, requesting Special:NewFiles with actor as a condition can result in a very long running query.
Patch / fix
- bitnami mediawiki 1.35.6, 1.36.4, 1.37.2
- mediawiki mediawiki 1.35.6, 1.36.4, 1.37.2
- mediawiki Debian 14, Debian 13, Debian 12 1:1.35.6-1
debian advisories DEBIAN-CVE-2022-28203
- mediawiki Arch Linux 1.38.3-1
arch linux advisories AVG-2823
- phabricator.wikimedia.org/T297731 advisory
Exploit prediction
1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- phabricator.wikimedia.org https://phabricator.wikimedia.org/T297731 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mediawiki | <1.35.6 >=1.36.0, <1.36.4 >=1.37.0, <1.37.2 |
1.35.6 1.36.4 1.37.2 |
Classification
- Weakness
-
- CWE-763 Release of Invalid Pointer or Reference
References
-
phabricator.wikimedia.org
/T297731
exploit, issue-tracking, patch, vendor-advisory, web
-
debian.org
/security/2022/dsa-5246
vendor-advisory, third-party-advisory, web
-
lists.debian.org
/debian-lts-announce/2022/09/msg00027.html
mailing-list, third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2022-28203
web
Sources
- CVE List CVE-2022-28203
- NVD CVE-2022-28203
- OSV BIT-mediawiki-2022-28203
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.