Medium severity · published Sep 25, 2026
CVE-2026-100381
UploadWizard Flickr collection and set titles allow DOM XSS
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - UploadWizard Extension allows Cross-Site Scripting (XSS).
This issue affects Mediawiki - UploadWizard Extension: from * before 1.46.1, 1.45.5, 1.43.10.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
Mediawiki - UploadWizard Extension · Wikimedia Foundation
before 1.46.1, 1.45.5, 1.43.10 · source: vendor
Affected product
MU
Mediawiki - UploadWizard Extension
Wikimedia Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100381
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100381
gerrit.wikimedia.org
https://gerrit.wikimedia.org/r/q/Iba914c0d7e86f9342ee9cecde3bee0806ec90c84
phabricator.wikimedia.org
https://phabricator.wikimedia.org/T434619
More from Mediawiki - UploadWizard Extension
6.1
CVE-2026-0671
Multiple stored i18n/message-key XSSes in UploadWizard