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TI-2026-74637 Aliases CVE-2026-103304GHSA-pqxc-w2xw-35h9

Missing authorization in eaSYNC Booking lets anyone change site emails

Priority LOW 29CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
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 eaSYNC Booking WordPress plugin before 1.3.31 does not check authorization or nonces on several cancellation-related AJAX actions (CWE-862). An unauthenticated remote attacker can create booking cancellation requests, trigger booking notification emails, and overwrite the content of emails the site sends.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The eaSYNC Booking WordPress plugin before 1.3.31 does not perform authorization or nonce checks on several of its cancellation-related AJAX actions, allowing unauthenticated users to create booking cancellation requests, trigger booking notification emails, and overwrite the content of the emails the site sends.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00221 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed eaSYNC Booking (Unknown): 1.3.31

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
UnknowneaSYNC Bookingbefore 1.3.311.3.31Patch availableCNA
  • eaSYNC Booking VendorUnknown Affected before 1.3.31 Fixed in 1.3.31 Patch available CNA

Remediation

Update eaSYNC Booking to version 1.3.31 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA eaSYNC Booking (Unknown) Fixed in 1.3.31

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-103304
  2. 2026-10-16 Alias added: GHSA-pqxc-w2xw-35h9

References

Exploit 1

Sources

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