CVE-2026-116879: SemanticMediaWiki · Missing Authorization
Affects SemanticMediaWikiSource CVE Database V5
Not known to be exploited · CVSS 6.9 Medium : upgrade to 7.3.1 when convenient.
Data as of 27 Oct 2026, 10:57 UTC
- Patch
- Available – fixed in 7.3.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade SemanticMediaWiki and semanticmediawiki/SemanticMediaWiki to 7.3.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SemanticMediaWikiSemanticMediaWiki | Affected
| Fixed in
|
GitHubsemanticmediawiki/SemanticMediaWikipkg:github/semanticmediawiki/SemanticMediaWikiOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Semantic MediaWiki to version 7.3.1 or later, where this missing authorization vulnerability has been fixed. No other mitigation is required as the fix addresses the root cause.
Description
Semantic MediaWiki versions 7.3.0 before 7.3.1 have a missing authorization vulnerability in the smwtask update task. This flaw allows users with edit rights to force semantic updates on arbitrary pages, including restricted ones, by supplying a crafted serialized subject parameter. The forced reparsing can lead to semantic-store writes and resource-intensive dependency processing.
References
- github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-6wrc-864f-6vqp (opens in a new tab)
- github.com/SemanticMediaWiki/SemanticMediaWiki/commit/cba0541d1f931e5c5440a483790dd7c3dec1751d (opens in a new tab)
- vulncheck.com/advisories/semantic-mediawiki-7.3.0-before-7.3.1-missing-authorization-via-smwtask-update-task (opens in a new tab)