Vulnerability Intelligence Report
Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
CVE-2026-116871
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.
No Active Exploit Signals
CVSS Base Score
8.7
HIGH
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-674 ↗Uncontrolled Recursion
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| SemanticMediaWiki | SemanticMediaWiki | 3.0.0 < 7.3.1 (affected), 7.3.1 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-27T01:00:42 |
| Published | 2026-10-27T10:23:26 |
| Patch Date | 2026-09-28 |
| Last Updated | 2026-10-27T10:26:38 |
Community Chatter & Buzz