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EUVD-2026-246413

2026-10-04T17:46:44.413950+00:00

EUVD-2026-246413

fkie_cve-2025-53368

2026-10-04T17:46:44.413982+00:00

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, page descriptions are inserted into raw HTML without proper sanitization by the Citizen skin when using the old search bar. Any user with page editing privileges can insert cross-site scripting (XSS) payloads into the DOM for other users who are searching for specific pages. This issue has been patched in version 3.4.0.

GHSA-rq6g-6g94-jfr4 — starcitizentools/citizen-skin is vulnerable to Stored XSS attack in the legacy search bar through page descriptions

2026-10-04T17:46:44.414013+00:00

Affected: Packagist: starcitizentools/citizen-skin

### Summary Page descriptions are inserted into raw HTML without proper sanitization by the Citizen skin when using the old search bar.

### Details

The descriptions, which are unsanitized, are inserted as raw HTML: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/d4dfc3697a82948b3b9c4d44e9a273c79bc86b87/resources/skins.citizen.search/templates/TypeaheadListItem.mustache#L18

### PoC

All of the reproduction methods require the command palette to be disabled via `$wgCitizenEnableCommandPalette = false;`. Additionally, the action API must be used as the Search Gateway via `$wgCitizenSearchGateway = 'mwActionApi';`.

#### TextExtracts as the description source

* Enable the TextExtracts extension * Add `$wgCitizenSearchDescriptionSource = 'textextracts';` to your LocalSettings.php * Create a page called `CitizenXSSTextExtracts` and insert `` into it * Open the search modal and search for `CitizenXSSTextExtracts`

![image](https://github.com/user-attachments/assets/fbc88458-c429-4f08-9376-584b7db93f58)

#### Description2 as the description source

* Enable the Description2 extension * Add `$wgEnableMetaDescriptionFunctions = true;` to your LocalSettings.php to enable the `{{#description2:}}` parser function * Add `$wgCitizenSearchDescriptionSource = 'pagedescription';` to your LocalSettings.php * Create a page called `CitizenXSSDescription2` and insert `{{#description2:

WID-SEC-W-2025-1525 — MediaWiki Extensions und Skins: Mehrere Schwachstellen

2026-10-04T17:46:44.414063+00:00

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in MediaWiki ausnutzen, um SQL-Injection- und XSS-Angriffe durchzuführen, Sicherheitsmechanismen zu umgehen, vertrauliche Informationen offenzulegen oder sich unbefugt höhere Berechtigungen zu verschaffen.