CVE-2026-100376 — TemplateSandbox can be abused for XSS by asking another user to preview a page with a certain sandbox prefix

CVE-2026-100376

TemplateSandbox can be abused for XSS by asking another user to preview a page with a certain sandbox prefix PUBLISHED

Description (CNA)

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.

Affected (CNA)

Vendor / product	Versions
Wikimedia Foundation / Mediawiki - TemplateSandbox Extension	affected * before 1.46.1, 1.45.5, 1.43.10

CWE

CWE-79

References

https://phabricator.wikimedia.org/T430596
https://gerrit.wikimedia.org/r/q/I6630b9915f640bf75c8570165eb8728bd7a2c07a

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.