CVE-2026-100376 — TemplateSandbox can be abused for XSS by asking another user to preview a page with a certain sandbox prefix
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cr…
Published: 2026-09-25 · CVSS: 4.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7