MEDIUMCVSS v3.1 5.4Vulnerability

CVE-2026-126564

Semantic MediaWiki 2.5.0 before 7.4.1 contains a stored cross-site scripting vulnerability in ValueFormatter::getFormattedSubject() that renders property label segments after a literal   as unescaped markup. Users with page-edit rights can set a preferred property label containing an img onerror payload that executes when anyone, including administrators, views Special:Browse or the smwbrowse API.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-11T23:49:45.533241+00:00
Epss score
0.00223
Cvss severity
MEDIUM
Cvss score
5.4
Retrieved at
2026-11-11T23:51:13+00:00
Last source
FIRST EPSS
Score
5.4
Cvss version
3.1
Cve id
CVE-2026-126564
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
First seen by Signal
2026-11-11T03:34:07+00:00
Name
CVE-2026-126564
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Published at
2026-11-11T03:16:50.723
Last modified
2026-11-11T03:16:50.723
Epss percentile
0.13106

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CVE-2026-126564 (CVSS v3.1 5.4) — Ninja Signal Threat Intelligence | Ninja Signal