CVE-2026-116877

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSemantic-mediawiki Semantic Mediawiki

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

semantic-mediawiki semantic_mediawiki7.3.1 or later

Patches

github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4cee9ba0f7162f5a38c031b

Vendor advisories

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqh

Affected products

Product	Affected versions	Fixed in
semantic-mediawiki semantic_mediawiki	2.5.0 ≤ v < 7.3.1	7.3.1

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