CVE-2026-116871

HighCVSS 7.5/10Last modified Nov 4, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-674

Affected software

VendorProductVersions
SemanticMediaWikiSemanticMediaWiki>= 3.0.0, < 7.3.1

References

Timeline

Published
Oct 27, 2026
Last modified
Nov 4, 2026
NVD status
Modified

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CVE-2026-116871: High severity, CVSS 7.5 | Vulnix