CVE-2025-61682 Semantic MediaWiki - Stored XSS

Semantic MediaWiki >= 3.1.0 and < 7.0.0 contains a stored XSS caused by unsanitized insertion of data attribute values into the DOM as HTML, letting remote attackers execute arbitrary scripts, exploit requires crafted wikitext.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.29% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Upgrade to version 7.0.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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