Vulnerability · Published Sep 27, 2020 · Assigned by mitre
CVE-2020-25812
Medium 6.1
In plain English
A medium-severity security flaw in the mediawiki package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.1%top 34.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mediawiki | 1:1.35.0-1 | DEBIAN-CVE-2020-25812 |
| Debian:13 | mediawiki | 1:1.35.0-1 | DEBIAN-CVE-2020-25812 |
| Debian:14 | mediawiki | 1:1.35.0-1 | DEBIAN-CVE-2020-25812 |
| Packagist | mediawiki/core | 1.34.3 | GHSA-rj9p-8jxj-2ch4 |
| Packagist | mediawiki/core | 1.35.0 | GHSA-rj9p-8jxj-2ch4 |
Affected products (as reported)
References
- https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592 x_refsource_MISC
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html x_refsource_CONFIRM
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html x_refsource_MISC
- FEDORA-2020-a4802c53d9 vendor-advisory, x_refsource_FEDORA