| Name | CVE-2020-25812 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4767-1 |
| NVD severity | medium |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mediawiki (PTS) | stretch | 1:1.27.7-1~deb9u3 | fixed |
| stretch (security) | 1:1.27.7-1~deb9u5 | fixed | |
| buster | 1:1.31.7-1~deb10u1 | vulnerable | |
| buster (security) | 1:1.31.10-1~deb10u1 | fixed | |
| bullseye, sid | 1:1.35.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mediawiki | source | stretch | (not affected) | |||
| mediawiki | source | buster | 1:1.31.10-1~deb10u1 | DSA-4767-1 | ||
| mediawiki | source | (unstable) | 1:1.35.0-1 |
[stretch] - mediawiki <not-affected> (Vulnerable code introduced later)
https://lists.wikimedia.org/pipermail/wikitech-l/2020-September/093888.html
https://phabricator.wikimedia.org/T255918