CVE-2026-116890 json
Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API
published last mo. modified 6d ago also GHSA-jr78-w6w5-m8f8 , EUVD-2026-110718
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
Semantic MediaWiki from 3.0.0 before 7.3.0 contains a missing authorization vulnerability in the api.php smwtask module that allows unauthenticated attackers to run admin-only maintenance tasks. Attackers can use the public anonymous CSRF token to read internal store statistics, enqueue jobs like smw.entityIdDisposer, and execute queued jobs, degrading performance and altering semantic data.
Patch / fix
- packagist mediawiki/semantic-media-wiki 7.3.0
- SemanticMediaWiki SemanticMediaWiki 7.3.0
Is CVE-2026-116890 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 13d ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-jr78-w6w5-m8f8 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | mediawiki/semantic-media-wiki | >=3.0.0, <7.3.0 |
7.3.0 |
Affected products
- SemanticMediaWiki SemanticMediaWiki
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-jr78-w6w5-m8f8
vendor-advisory, web, exploit, mitigation
-
vulncheck.com
/advisories/semantic-mediawiki-3.0.0-before-7.3.0-missing-authorization-via-smwtask-api
third-party-advisory
-
github.com
/SemanticMediaWiki/SemanticMediaWiki
package
-
github.com
/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.3.0
web
Sources
- CVE List CVE-2026-116890
- GitHub Advisory GHSA-jr78-w6w5-m8f8
- NVD CVE-2026-116890
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