CVE-2026-116878
CVE-2026-116878 · Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilarity
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows anonymous attackers to force quadratic computation by supplying a zero limit to Special:PropertyLabelSimilarity. Attackers can send repeated requests with limit=0 to bypass the SQL LIMIT and trigger pairwise similar_text() comparisons, exhausting PHP CPU, memory, and database connections.
CVSS 8.7 · Élevée · Correctif disponible
- Publication
- Mise à jour
Produits et versions concernés
semanticmediawiki
- Versions du logiciel
- ≥ 2.5.0, < 7.3.1: Concernée (semver)
- 7.3.1: Non concernée (semver)
Mettez à jour vers 7.3.1
Sources originales
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-wh64-r5x2-vjgf
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/15ed8489a4ca142ea5417d0c4403dbbe0a3ee3f5
- https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-special-propertylabelsimilarity
- https://nvd.nist.gov/vuln/detail/CVE-2026-116878