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CVE-2026-116872GHSA-j2r2-7qpg-p675

SemanticMediaWiki: Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters

SemanticMediaWiki SemanticMediaWiki
Open in ThreatlineRecord JSON
CVSS
8.7High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in7.3.1Fixed versionCVE List
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • SemanticMediaWikiaffected: 3.0.0 before 7.3.1CVE List
  • SemanticMediaWikiunaffected: 7.3.1CVE List

References 3