CVE-2026-116891

SemanticMediaWiki 4.2.0 before 7.2.1 Reflected XSS via Special:FacetedSearch cstate

MEDIUM
6.1
CVSS Score
Published: October 27, 2026 at 10:23 AM UTC
Updated: October 28, 2026 at 03:33 PM UTC
1 product affected across 1 vendorSemantic MediaWiki

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%

Description

SemanticMediaWiki from 4.2.0 before 7.2.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject HTML via unescaped cstate parameters in Special:FacetedSearch. Attackers can craft URLs with q, a matching crc32 csum or filtered=1, and cstate values that break out of hidden input attributes to execute script in victims' browsers.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.2.0 ≤ v < 7.2.1
Vendor states this is fixed in 7.2.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

6.1MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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