CVE-2021-31545
MEDIUMCVSS 5.3/10EPSS 0.82%
Last modified
CVE-2021-31545 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.
Description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | <= 1.35.2 |
References
- https://gerrit.wikimedia.org/r/q/I8d5ed9ca84282ee50832035af86123633fc88293Issue Tracking, Vendor Advisory
- https://phabricator.wikimedia.org/T71367Third Party Advisory
- https://gerrit.wikimedia.org/r/q/I8d5ed9ca84282ee50832035af86123633fc88293Issue Tracking, Vendor Advisory
- https://phabricator.wikimedia.org/T71367Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-31545?
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.
How severe is CVE-2021-31545?
CVE-2021-31545 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31545?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-31545?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST