CVE-2020-25828
Medium
Description
An issue was discovered in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. The non-jqueryMsg version of mw.message().parse() doesn't escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mediawiki
PublishedSep 27, 2020
First seenSep 27, 2020
How to fix
Update
- mediawiki mediawiki1.34.4 or later
- mediawiki/core1.31.9, 1.34.3, 1.35.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki mediawiki | 1.32.0 ≤ v < 1.34.4, 1.31.10 | 1.34.4 |
| fedoraproject fedora | 33 | — |
| mediawiki/corePackagist | 1.31.0 ≤ v < 1.31.9, 1.32.0 ≤ v < 1.34.3, 1.35.0-rc.0 ≤ v < 1.35.0 | 1.31.9, 1.34.3, 1.35.0 |
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