CVE-2026-126563
Received Received - Intake

Reflected XSS in Semantic MediaWiki TimeValueFormatter

Publication date: 2026-11-11

Last updated on: 2026-11-11

Assigner: VulnCheck

Description
Semantic MediaWiki 2.4.0 before 7.4.1 contains a reflected cross-site scripting vulnerability in TimeValueFormatter::getCaptionFromFreeFormat(), which emits free-format date captions in HTML without escaping. Unauthenticated attackers can craft a Special:Ask URL with HTML markup in a date printout format (#-F[...]) to execute script in a logged-in victim's browser session.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-11
Last Modified
2026-11-11
Generated
2026-11-11
EPSS Evaluated
N/A
NVD
CVE-2026-126563
EUVD
EUVD-2026-123078

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
semantic_mediawiki semantic_mediawiki to 7.4.1 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
AI Quick Actions have not been generated yet.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-126563. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...