CVE-2025-49575: Starcitizentools/citizen skin Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-4c2h-67qq-vm87
CVSS 6.5
CWE-79
Published
Advisory Summary

CVE-2025-49575 is a MODERATE (CVSS 6.5) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Starcitizentools/citizen skin libraries in the Packagist ecosystem. The issue involves citizen skin vulnerable to stored xss through multiple system messages. Remediation is available by upgrading affected packages to version 3.3.1.

CVE-2025-49575 at a Glance

CVE Identifier CVE-2025-49575
GHSA Identifier GHSA-4c2h-67qq-vm87
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Starcitizentools/citizen skin
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2025-49575

To remediate this vulnerability, upgrade all affected Starcitizentools/citizen skin dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

starcitizentools/citizen-skin fixed: 3.3.1
Upgrade starcitizentools/citizen-skin to 3.3.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for starcitizentools/citizen-skin

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-49575, inspect your project dependencies for Starcitizentools/citizen skin:

inspect dependencies for starcitizentools/citizen-skin

Analyze the terminal output to locate any version of Starcitizentools/citizen skin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Starcitizentools/citizen skin, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2025-49575 Affected Starcitizentools/citizen skin Versions

1 component(s)
Fixed Versions:
3.3.1
Product / Package Ecosystem Affected Versions Fixed Version
starcitizentools/citizen-skin
Packagist
≥ 2.4.2
< 3.3.1
3.3.1

References

Frequently Asked Questions

What is CVE-2025-49575?
CVE-2025-49575 is a security vulnerability in Starcitizentools/citizen skin involving Citizen skin vulnerable to stored XSS through multiple system messages under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Starcitizentools/citizen skin versions are affected?
Affected versions include releases prior to 3.3.1 across affected packages: starcitizentools/citizen-skin.
What version fixes CVE-2025-49575?
Upgrading to 3.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is starcitizentools/citizen-skin affected?
Yes, starcitizentools/citizen-skin is affected in releases prior to 3.3.1. Upgrade your dependency to 3.3.1 or later.
What is the CVSS score of CVE-2025-49575?
CVE-2025-49575 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2025-49575?
CVE-2025-49575 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-49575?
Run the dependency tree command: 'inspect dependencies for starcitizentools/citizen-skin'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4c2h-67qq-vm87",
  "modified" : "2025-06-13T03:43:58Z",
  "published" : "2025-06-11T19:59:54Z",
  "aliases" : [ "CVE-2025-49575" ],
  "summary" : "Citizen skin vulnerable to stored XSS through multiple system messages",
  "details" : "### Summary\nMultiple system messages are inserted into the CommandPaletteFooter as raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM.\n\n### Details\nThe 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\n`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\n`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\n\n### PoC\n1. 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)\n2. Open the command palette\n![image](https://github.com/user-attachments/assets/f07b238b-1ac1-4781-8d03-db755ba04546)\n\n### Impact\nThis impacts wikis where a group has the `editinterface` but not the `editsitejs` user right.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "starcitizentools/citizen-skin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.2"
      }, {
        "fixed" : "3.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-4c2h-67qq-vm87"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-49575"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/4fa69e1d062dca7e407cc0530cf1da3e2baaf0b5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/54c8717d45ce1594918f11cb9ce5d0ccd8dfee65"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-11T19:59:54Z",
    "nvd_published_at" : "2025-06-12T19:15:20Z"
  }
}