CVE-2026-116871: fallo de gravedad alta en SemanticMediaWiki
Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.7epss 0.4%
Semantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that processes nested query tokens before depth limits apply. Unauthenticated attackers can submit deeply nested query elements to the action=ask API to consume substantial CPU and memory, tying up request workers.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Productos afectados
SemanticMediaWiki · SemanticMediaWikiCVEs relacionadas — SemanticMediaWiki
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-116878HIGHSemantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilarityEPSS 0.4%CVE-2025-61682HIGHSemantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributesEPSS 0.4%CVE-2026-116877HIGHSemantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_eventEPSS 0.4%CVE-2026-116872HIGHSemantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact FiltersEPSS 0.4%CVE-2026-77616MEDIUMSemantic MediaWiki affected by reflected XSS in `Special:Ask` via a forged cursor pagination tokenEPSS 0.3%CVE-2026-77610MEDIUMSemantic MediaWiki has a query debug output XSS (`DebugFormatter`)EPSS 0.3%
Referencias
https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/756492002752f937a9e115e14330b1181bd8c60chttps://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/e642f38c708dee7da5e885b8d40be8ffc56f3e87https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-f8vw-wvm6-h2qqhttps://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-uncontrolled-recursion-via-special-ask