CVE-2024-34500: Samwilson/unlinked wikibase Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-wcx3-63mm-h8x6
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2024-34500 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Samwilson/unlinked wikibase libraries in the Packagist ecosystem. The issue involves mediawiki unlinkedwikibase cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 1.42.0.

CVE-2024-34500 at a Glance

CVE Identifier CVE-2024-34500
GHSA Identifier GHSA-wcx3-63mm-h8x6
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Samwilson/unlinked wikibase
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2024-34500

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

samwilson/unlinked-wikibase fixed: 1.42.0 
Upgrade samwilson/unlinked-wikibase to 1.42.0
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 samwilson/unlinked-wikibase

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-34500, inspect your project dependencies for Samwilson/unlinked wikibase:

inspect dependencies for samwilson/unlinked-wikibase

Analyze the terminal output to locate any version of Samwilson/unlinked wikibase in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.42.0), 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 Samwilson/unlinked wikibase, 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

An issue was discovered in the UnlinkedWikibase extension in MediaWiki before 1.42.0. XSS can occur through an interface message. Error messages (in the $err var) are not escaped before being passed to Html::rawElement() in the getError() function in the Hooks class.

CVE-2024-34500 Affected Samwilson/unlinked wikibase Versions

1 component(s)
Fixed Versions:
1.42.0
Product / Package Ecosystem Affected Versions Fixed Version
samwilson/unlinked-wikibase
 Packagist
< 1.42.0
1.42.0

References

NVD — CVE-2024-34500 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-34500
Samwilson/unlinked wikibase Source Repository REPOSITORY
https://github.com/github/advisory-database/pull/5310
gerrit.wikimedia.org/r/c/mediawiki/exten... WEB
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/UnlinkedWikibase/+/1002175
gerrit.wikimedia.org/r/mediawiki/extensi... PACKAGE
https://gerrit.wikimedia.org/r/mediawiki/extensions/UnlinkedWikibase.git
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY
phabricator.wikimedia.org/t357203 WEB
https://phabricator.wikimedia.org/T357203

Frequently Asked Questions

What is CVE-2024-34500?
CVE-2024-34500 is a security vulnerability in Samwilson/unlinked wikibase involving MediaWiki UnlinkedWikibase Cross-site Scripting vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Samwilson/unlinked wikibase versions are affected?
Affected versions include releases prior to 1.42.0 across affected packages: samwilson/unlinked-wikibase.
What version fixes CVE-2024-34500?
Upgrading to 1.42.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is samwilson/unlinked-wikibase affected?
Yes, samwilson/unlinked-wikibase is affected in releases prior to 1.42.0. Upgrade your dependency to 1.42.0 or later.
What is the CVSS score of CVE-2024-34500?
CVE-2024-34500 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2024-34500?
CVE-2024-34500 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-2024-34500?
Run the dependency tree command: 'inspect dependencies for samwilson/unlinked-wikibase'. 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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wcx3-63mm-h8x6",
  "modified" : "2025-11-04T18:30:56Z",
  "published" : "2024-05-05T21:30:30Z",
  "aliases" : [ "CVE-2024-34500" ],
  "summary" : "MediaWiki UnlinkedWikibase Cross-site Scripting vulnerability",
  "details" : "An issue was discovered in the UnlinkedWikibase extension in MediaWiki before 1.42.0. XSS can occur through an interface message. Error messages (in the $err var) are not escaped before being passed to Html::rawElement() in the getError() function in the Hooks class.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "samwilson/unlinked-wikibase"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.42.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-34500"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/github/advisory-database/pull/5310"
  }, {
    "type" : "WEB",
    "url" : "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/UnlinkedWikibase/+/1002175"
  }, {
    "type" : "PACKAGE",
    "url" : "https://gerrit.wikimedia.org/r/mediawiki/extensions/UnlinkedWikibase.git"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T357203"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-12-04T22:46:01Z",
    "nvd_published_at" : "2024-05-05T19:15:07Z"
  }
}