Vulnerability Intelligence Report
SemanticMediaWiki 2.5.0 before 7.3.1 Stored XSS via Special:Browse Code Property
CVE-2026-116889
SemanticMediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject script through Code-typed property values. Attackers can annotate a valid JSON value embedding HTML markup, which the CodeStringValueFormatter renders unescaped on Special:Browse, executing JavaScript in viewers' sessions.
Cross-Site Scripting (XSS)
No Active Exploit Signals
CVSS Base Score
5.3
MEDIUM
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| SemanticMediaWiki | SemanticMediaWiki | 2.5.0 < 7.3.1 (affected), 7.3.1 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Vulnerability Class
Cross-Site Scripting (XSS)
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-27T01:01:43 |
| Published | 2026-10-27T10:23:38 |
| Patch Date | 2026-09-28 |
| Last Updated | 2026-10-27T10:26:50 |
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