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.
History

Thu, 05 Nov 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
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.
Title Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
First Time appeared Semantic-mediawiki
Semantic-mediawiki semantic Mediawiki
Weaknesses CWE-674
CPEs cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*
Vendors & Products Semantic-mediawiki
Semantic-mediawiki semantic Mediawiki
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-27T10:23:26.290Z

Updated: 2026-11-04T16:49:51.284Z

Reserved: 2026-10-27T01:00:42.500Z

Link: CVE-2026-116871

cve-icon Vulnrichment

Updated: 2026-11-04T16:49:24.650Z

cve-icon NVD

Status : Modified

Published: 2026-10-27T11:17:28.813

Modified: 2026-11-04T17:17:29.797

Link: CVE-2026-116871

cve-icon Redhat

No data.