High severity · published Sep 18, 2026
CVE-2025-61682
Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributes
8.6
CVSS
0.4%
EPSS
No
On KEV
Description
Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Versions starting in 3.1.0 and prior to 7.0.0 insert the unsanitized value of a data attribute into the DOM as HTML, allowing for stored XSS through wikitext. Version 7.0.0 patches the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
SemanticMediaWiki · SemanticMediaWiki
>= 3.1.0, < 7.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61682
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61682
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.0.0
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-hg8h-557g-q8pp
More from SemanticMediaWiki
7.5
CVE-2026-116878
Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilarity
7.5
CVE-2026-116872
Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters
7.5
CVE-2026-116871
Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
7.3
CVE-2026-116890
Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API
7.3
CVE-2026-116873
Semantic MediaWiki 7.3.0 Missing Authorization via smwtask API run-joblist and update