Eventin < 4.1.22 - Contributor+ Site Homepage Hijack and Event Taxonomy Manipulation via Missing Authorization
Priority LOW 22CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.
Summary
The Eventin WordPress plugin before 4.1.22 does not properly check authorization on several of its event-management REST routes, allowing users with contributor-level access and above to change the site's front-page setting to an event they do not own and to create, edit and delete global event and speaker taxonomy terms they should not be able to manage.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00331 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Eventin (Unknown): 4.1.22
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Eventin | before 4.1.22 | 4.1.22 | Patch available | CNA |
- Eventin VendorUnknown Affected before 4.1.22 Fixed in 4.1.22 Patch available CNA
Remediation
- Fix · CNA Eventin (Unknown) Fixed in 4.1.22
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84901
- 2026-10-03 Alias added: GHSA-88pj-jf5h-6qhv
References
Sources
- CVE-2026-84901 · CVE Program
- CVE-2026-84901 · NVD
- FIRST EPSS
- GHSA-88pj-jf5h-6qhv · GitHub Advisory Database · CC BY 4.0
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