Description
MediaWiki through 1.32.1 has Incorrect Access Control (issue 1 of 3). A spammer can use Special:ChangeEmail to send out spam with no rate limiting or ability to block them. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mediawiki | 1:1.31.2-1 | — |
| Debian 13 | mediawiki | 1:1.31.2-1 | — |
| Debian 12 | mediawiki | 1:1.31.2-1 | — |
| Debian 9 | mediawiki | 1:1.27.7-1~deb9u1 | DSA-4460-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mediawiki | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | mediawiki/core | < 1.27.6 | 1.27.6 | GHSA-6vfg-8ppv-h5hg |
| Packagist | mediawiki/core | >= 1.30.0, < 1.30.2 | 1.30.2 | GHSA-6vfg-8ppv-h5hg |
| Packagist | mediawiki/core | >= 1.31.0, < 1.31.2 | 1.31.2 | GHSA-6vfg-8ppv-h5hg |
| Packagist | mediawiki/core | >= 1.32.0, < 1.32.2 | 1.32.2 | GHSA-6vfg-8ppv-h5hg |
Advisories 1
- DSA-4460-1 mediawiki - security update Debian Security (DSA / DLA) · Mar 9, 2026