CVE-2025-49575 – starcitizentools/citizen-skin

Package

Manager: composer
Name: starcitizentools/citizen-skin
Vulnerable Version: >=2.4.2 <3.3.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00039 pctl0.10926

Details

Citizen skin vulnerable to stored XSS through multiple system messages ### Summary Multiple system messages are inserted into the CommandPaletteFooter as raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM. ### Details The messages are retrieved using the `plain()` output mode: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/resources/skins.citizen.commandPalette/components/CommandPaletteFooter.vue#L61-L66 `currentTip` is set to one of these messages: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/resources/skins.citizen.commandPalette/components/CommandPaletteFooter.vue#L69 `currentTip` is inserted as raw HTML (`vue/no-v-html` should *not* be ignored here): https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/resources/skins.citizen.commandPalette/components/CommandPaletteFooter.vue#L3-L4 ### PoC 1. Edit `citizen-command-palette-tip-commands`, `citizen-command-palette-tip-users`, `citizen-command-palette-tip-namespace` and `citizen-command-palette-tip-templates` to `<img src="" onerror="alert(1)">` (script tags don't work here due to the way the HTML is inserted) 2. Open the command palette ![image](https://github.com/user-attachments/assets/f07b238b-1ac1-4781-8d03-db755ba04546) ### Impact This impacts wikis where a group has the `editinterface` but not the `editsitejs` user right.

Metadata

Created: 2025-06-11T19:59:54Z
Modified: 2025-06-13T03:43:58Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-4c2h-67qq-vm87/GHSA-4c2h-67qq-vm87.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-4c2h-67qq-vm87
Finding: F425
Auto approve: 1