CVE-2026-116877
Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | semanticmediawiki |
| Product | semanticmediawiki |
| Published | Oct 27, 2026 |
| Last Updated | Oct 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for semanticmediawiki semanticmediawiki
Be the first to know when new medium vulnerabilities affecting semanticmediawiki semanticmediawiki are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
SemanticMediaWiki / SemanticMediaWiki
2.5.0 < 7.3.1
References
github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqh github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4cee9ba0f7162f5a38c031b vulncheck.com: https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-set-recurring-event
Credits
AlpetGexha