Medium severity · published Sep 29, 2026
CVE-2026-103048
Open Redirect in Special:Book
6.1
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
Mediawiki - Collection extension · The Wikimedia Foundation
before 1.46.1, 1.45.5, 1.43.10 · source: vendor
Affected product
MC
Mediawiki - Collection extension
The Wikimedia Foundation