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TI-2026-11181 Aliases CVE-2026-13169GHSA-f556-jv65-29j9

Eventin < 4.1.21 - Contributor+ Arbitrary Event Modification, Deletion and Ownership Takeover via IDOR

Priority LOW 37CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The Eventin WordPress plugin before 4.1.21 does not properly verify ownership of events before allowing them to be modified, deleted, or reassigned to a different author, allowing users with contributor-level access and above to alter, delete, or take over events created by other users including administrators.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0035 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Eventin (Unknown): 4.1.21

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownEventinbefore 4.1.214.1.21Patch availableCNA
  • Eventin VendorUnknown Affected before 4.1.21 Fixed in 4.1.21 Patch available CNA

Remediation

  • Fix · CNA Eventin (Unknown) Fixed in 4.1.21

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Eventin 4.1.21

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-11186 Eventin < 4.1.21 - Contributor+ Speaker Account Deletion via IDORPriority LOW 32
    • TI-2026-11187 Eventin < 4.1.21 - Contributor+ Schedule Deletion and Modification via IDORPriority LOW 29
    • TI-2026-11185 Eventin < 4.1.21 - Contributor+ User Role and Meta Modification via Speaker CreationPriority LOW 13
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13169
  2. 2026-10-03 Alias added: GHSA-f556-jv65-29j9

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences