Eventin < 4.1.20 - Unauthenticated Account Creation via Waiting List Endpoint
Priority HIGH 75CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-284.
Summary
The Eventin WordPress plugin before 4.1.20 does not perform an authorization check on its waiting-list registration handler, allowing unauthenticated users to create WordPress user accounts for arbitrary email addresses and inject order records.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Eventin (Unknown): 4.1.20
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 4.1.20 | 4.1.20 | Patch available | CNA |
- Eventin VendorUnknown Affected before 4.1.20 Fixed in 4.1.20 Patch available CNA
Remediation
- Fix · CNA Eventin (Unknown) Fixed in 4.1.20
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Eventin 4.1.20
3 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM
Other records, highest priority first
- TI-2026-11180 Eventin < 4.1.20 - Contributor+ Customer PII Disclosure via REST APIPriority MEDIUM 62
- TI-2026-11189 Eventin < 4.1.20 - Contributor+ Order Information Disclosure via IDORPriority MEDIUM 53
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13171
- 2026-10-03 Alias added: GHSA-cj36-48gw-w6x2
References
Sources
- CVE-2026-13171 · CVE Program
- CVE-2026-13171 · NVD
- FIRST EPSS
- GHSA-cj36-48gw-w6x2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences