CVE-2021-41801
8.8 HIGHThe ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control
Published: 2021-10-11 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 8.8 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product |
|---|---|
| mediawiki | mediawiki |
Description
The ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control. When a user is blocked after submitting a replace job, the job is still run, even if it may be run at a later time (due to the job queue backlog)
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-41801
- [Other]https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
- [Patch]https://phabricator.wikimedia.org/T279090
- [Other]https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
- [Patch]https://phabricator.wikimedia.org/T279090
Related CVEs
Same vendor
- CVE-2026-34094 — Vulnerability in Wikimedia Foundation MediaWiki (3.8 LOW)
- CVE-2026-34093 — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki (5.3 MEDIUM)
- CVE-2021-41800 — MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time) (5.3 MEDIUM)
- CVE-2021-41799 — MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time) (7.5 HIGH)
- CVE-2021-41798 — MediaWiki before 1.36.2 allows XSS (6.1 MEDIUM)