{"id":"CVE-2026-116877","state":"PUBLISHED","title":"Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event","description":"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.","publishedAt":"2026-10-27T10:23:30.296Z","updatedAt":"2026-10-27T10:26:42.104Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["SemanticMediaWiki SemanticMediaWiki"],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"2.5.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqh","https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4cee9ba0f7162f5a38c031b","https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-set-recurring-event"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116877.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116877","state":"PUBLISHED","datePublished":"2026-10-27T10:23:30.296Z","dateUpdated":"2026-10-27T10:26:42.104Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-27T01:00:42.500Z"},"containers":{"cna":{"title":"Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"2.5.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqh","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-vxrm-2g9f-2vqh)"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4cee9ba0f7162f5a38c031b","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-set-recurring-event","name":"VulnCheck Advisory: Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-27T10:26:42.104Z"},"datePublic":"2026-09-28T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*","versionStartIncluding":"2.5.0","versionEndExcluding":"7.3.1"}]}]}],"credits":[{"lang":"en","value":"AlpetGexha","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}