CVE-2026-126560 json
Semantic MediaWiki 3.0.0 before 7.4.1 Stored XSS via data-search Attributes
published yesterday modified yesterday also EUVD-2026-123075 , GHSA-gg2q-rc52-22pp
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository SemanticMediaWiki/SemanticMediaWiki. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
Semantic MediaWiki 3.0.0 before 7.4.1 contains a stored cross-site scripting vulnerability in the DataTables integration that initialises author-written smw-datatable tables unchanged. Users with page-edit rights can add HTML entity-encoded markup in data-search or data-filter cell attributes, executing script in viewers' browsers including administrators.
Patch / fix
- SemanticMediaWiki SemanticMediaWiki 7.4.1
Is CVE-2026-126560 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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 | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- SemanticMediaWiki SemanticMediaWiki
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/commit/db7f59461a7815416a719b71ce48fb76481ecaf2
patch
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-gg2q-rc52-22pp
vendor-advisory, advisory
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1
release-notes
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/res/smw/printer/ext.smw.tableprinter.js#L349-L357
technical-description
-
vulncheck.com
/advisories/semantic-mediawiki-3.0.0-before-7.4.1-stored-xss-via-data-search-attributes
third-party-advisory
Sources
- CVE List CVE-2026-126560
- NVD CVE-2026-126560
- Maintainer advisory GHSA-gg2q-rc52-22pp
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of SemanticMediaWiki/SemanticMediaWiki published their own advisory on GitHub. Reviewed sources take precedence over it.