CVE-2026-103048

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Open Redirect in MediaWiki Collection Extension

Publication date: 2026-09-30

Last updated on: 2026-10-01

Assigner: wikimedia-foundation

Description

URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - Collection extension allows Fake the Source of Data. This issue affects Mediawiki - Collection extension: before 1.46.1, 1.45.5, 1.43.10.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-30

Last Modified

2026-10-01

Generated

2026-10-19

AI Q&A

2026-09-30

EPSS Evaluated

2026-10-18

NVD

CVE-2026-103048

EUVD

EUVD-2026-89487

Affected Vendors & Products

Vendor	Product	Version / Range
the_wikimedia_foundation	mediawiki_collection_extension	to 1.43.10 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-601	The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Attack-Flow Graph

Executive Summary

This vulnerability is an open redirect issue in the Wikimedia Foundation Mediawiki - Collection extension. It allows attackers to manipulate URLs to redirect users to untrusted sites, potentially deceiving them about the source of data.

Detection Guidance

This vulnerability is specific to the MediaWiki Collection extension versions before 1.46.1, 1.45.5, and 1.43.1. To detect it, check the installed version of the extension in your MediaWiki installation. If you are running an affected version, update to a patched version immediately.

Impact Analysis

This vulnerability could trick you into visiting malicious websites by disguising them as legitimate sources. It may lead to phishing attacks, malware downloads, or unauthorized data collection.

Compliance Impact

This vulnerability could violate GDPR by exposing users to phishing or data theft, or HIPAA by compromising protected health information through deceptive redirects. Compliance may be impacted if user data is exposed.

Mitigation Strategies

Update the Mediawiki - Collection extension to version 1.46.1, 1.45.5, or 1.43.10 or later to address the open redirect vulnerability.

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