Vulnerability Details : CVE-2021-44856
An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value.
Products affected by CVE-2021-44856
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:1.37.0:-:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc0:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-44856
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-44856
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-04-14 |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2021-44856
-
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-44856
-
https://security.gentoo.org/glsa/202305-24
MediaWiki: Multiple Vulnerabilities (GLSA 202305-24) — Gentoo security
-
https://phabricator.wikimedia.org/T271037
⚓ T271037 CVE-2021-44856: Title blocked in AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of EditFilterMergedContent hook return valueIssue Tracking;Patch;Vendor Advisory
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