CVE-2026-116872

HighCVSS 7.5/10Last modified Nov 4, 2026

Description

Semantic MediaWiki from 3.0.0 before 7.3.1 contains an algorithmic complexity vulnerability in TermParser::normalize_compact_form() that allows unauthenticated attackers to cause quadratic CPU consumption. Attackers can submit long search terms with many distinct in:(...) or has:(...) expressions to Special:Search to exhaust PHP search workers when the extended search engine is enabled.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-407

Affected software

VendorProductVersions
SemanticMediaWikiSemanticMediaWiki>= 3.0.0, < 7.3.1

References

Timeline

Published
Oct 27, 2026
Last modified
Nov 4, 2026
NVD status
Analyzed

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CVE-2026-116872: High severity, CVSS 7.5 | Vulnix