CVE-2026-116887
Semantic MediaWiki 3.0.0 before 7.3.1 Stored XSS via Special:Browse Keyword Property
Semantic MediaWiki from 3.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject HTML through Keyword-typed property values rendered unescaped on Special:Browse. Attackers can annotate a Keyword property with an event-handler payload that executes JavaScript in viewers' sessions, including administrators, to read tokens and perform actions.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| SemanticMediaWiki SemanticMediaWiki |
≥ 3.0.0; < 7.3.1 (affected, semver) 7.3.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
NVD applicability configurations (1)
These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.
[
{
"negate": false,
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*",
"versionEndExcluding": "7.3.1",
"versionStartIncluding": "3.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
]CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 5.3 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | CNA: VulnCheck |
| 3.1 / 5.4 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | CNA: VulnCheck |
| 4.0 / 5.3 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 5.4 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9
exploit · ADP: CISA-ADP - https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9
exploit · [email protected] - https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9
exploit · 134c704f-9b21-4f2e-91b3-4a467353bcc0
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-stored-xss-via-special-browse-keyword-propertyCNA: VulnCheck · third-party-advisory
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9ADP: CISA-ADP · exploit
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9[email protected] · Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-stored-xss-via-special-browse-keyword-property[email protected] · Third Party Advisory
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9134c704f-9b21-4f2e-91b3-4a467353bcc0 · Exploit, Vendor Advisory
For agents and automation
Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.
Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.
Endpoints and access details
https://api.y2.dev/api/v2/cyber/cveshttps://api.y2.dev/api/v2/cyber/cves/{cveId}
A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.
For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.