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CVE-2026-103048

Open Redirect in Special:Book

MEDIUM
6.1
CVSS Score
Published: September 29, 2026 at 11:04 PM UTC
Updated: October 1, 2026 at 07:17 PM UTC
1 product affected across 1 vendorCollection

Using Mediawiki - Collection extension by The Wikimedia Foundation?

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Collection· Wikimedia
60%
v < 1.46.1, 1.45.5, 1.43.10
Affected range stops below 1.46.1, 1.45.5, 1.43.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Issue Tracking
Source: cverecord
https://phabricator.wikimedia.org/T321092
Mitigation
Source: cverecord
https://gerrit.wikimedia.org/r/c/1346083

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-601

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