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TI-2026-58367 Aliases CVE-2026-84907GHSA-8p9w-4xhq-w374

Eventin < 4.1.24 - Unauthenticated Order and Attendee Status Reset via Payment REST Endpoint

Priority LOW 17CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · 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 4.1.24 does not properly authorise order finalisation when its offline (local) payment method is enabled, relying on a nonce that is exposed to unauthenticated visitors and never checking that the caller owns the order, allowing unauthenticated attackers to reset any existing order and its attendees to a pending state and thereby invalidate paid tickets.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00249 16th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Eventin (Unknown): 4.1.24

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

VendorProductAffected versionsFixed inStatusSource
UnknownEventin4.1.5 to before 4.1.244.1.24Patch availableCNA
  • Eventin VendorUnknown Affected 4.1.5 to before 4.1.24 Fixed in 4.1.24 Patch available CNA

Remediation

  • Fix · CNA Eventin (Unknown) Fixed in 4.1.24

Fixed in the same release

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

  • Release ·

    Eventin 4.1.24

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-58366 Eventin < 4.1.24 - Unauthenticated Payment Bypass via Stripe and PayPal Cross-Order Transaction ReplayPriority MEDIUM 63
    • TI-2026-54139 Eventin < 4.1.24 - Unauthenticated Ticket Price Rewrite via order_tokenPriority LOW 30
    • TI-2026-58365 Eventin < 4.1.24 - Contributor+ User Creation via Speaker CreationPriority LOW 13
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84907
  2. 2026-10-03 Alias added: GHSA-8p9w-4xhq-w374

References

Exploit 1

Sources

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