CVE-2026-116877: fallo de gravedad alta en SemanticMediaWiki
Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event
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 from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows low-privilege editors to bypass smwgMaxNumRecurringEvents by supplying a large limit parameter. Attackers can save pages using #set_recurring_event without an end date to generate thousands or millions of date subobjects, exhausting CPU, memory, and database resources.
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-2026-116871HIGHSemantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:AskEPSS 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/215599f0fc03274fd4cee9ba0f7162f5a38c031bhttps://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqhhttps://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-set-recurring-event