CVE-2025-53370: Starcitizentools/citizen skin Cross-Site Scripting Vulnerability
HIGHCVE-2025-53370 is a HIGH (CVSS 8.6) 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 vulnerable to stored xss through short descriptions. Remediation is available by upgrading affected packages to version 3.4.0.
CVE-2025-53370 at a Glance
Security Impact
CVSS: 8.6
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).
How to Fix CVE-2025-53370
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.
Upgrade starcitizentools/citizen-skin to 3.4.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for starcitizentools/citizen-skinHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-53370, inspect your project dependencies for Starcitizentools/citizen skin:
inspect dependencies for starcitizentools/citizen-skinAnalyze 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 3.4.0), 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
CVE-2025-53370 Affected Starcitizentools/citizen skin Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
starcitizentools/citizen-skin
|
Packagist |
≥ 1.9.4
< 3.4.0
|
3.4.0
|
References
Frequently Asked Questions
What is CVE-2025-53370?
Which Starcitizentools/citizen skin versions are affected?
What version fixes CVE-2025-53370?
Is starcitizentools/citizen-skin affected?
What is the CVSS score of CVE-2025-53370?
What CWE is associated with CVE-2025-53370?
How can I check Packagist dependencies for CVE-2025-53370?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-prmv-7r8c-794g",
"modified" : "2025-07-03T21:53:07Z",
"published" : "2025-07-03T21:29:16Z",
"aliases" : [ "CVE-2025-53370" ],
"summary" : "Citizen vulnerable to Stored XSS through short descriptions",
"details" : "### Summary\nShort descriptions set via the [ShortDescription extension](https://www.mediawiki.org/wiki/Extension:ShortDescription) are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page.\n\n### Details\nThe `shortdesc` property, which contains unsanitized user input, is retrieved from the OutputPage and returned as the tagline:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L249-L251\nThe tagline is then provided to the template data:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L270-L275\nThe template then inserts the tagline into raw HTML without doing any escaping:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/templates/PageHeading.mustache#L12\n\n### PoC\n1. Enable Citizen and ShortDescription\n2. Add `{{SHORTDESC:<img src=\"\" onerror=\"alert('citizen shortdescription xss')\">}}` to a page\n3. Visit the page\n\n\n\n\n### Impact\nArbitrary HTML can be inserted into the DOM by any user, allowing for JavaScript to be executed.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "starcitizentools/citizen-skin"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.9.4"
}, {
"fixed" : "3.4.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-prmv-7r8c-794g"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-53370"
}, {
"type" : "WEB",
"url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/aedbceb3380bb48db6b59e272fc187529c71c8ca"
}, {
"type" : "WEB",
"url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/c85a40bddc8651fff66df83a72debddcb34f0521"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen"
}, {
"type" : "WEB",
"url" : "https://github.com/StarCitizenTools/mediawiki-skins-Citizen/releases/tag/v3.4.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2025-07-03T21:29:16Z",
"nvd_published_at" : "2025-07-03T20:15:23Z"
}
}