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TI-2026-76270 Aliases CVE-2026-110034GHSA-9wc6-98h9-ghvq

Negative booking total via discount code in Salon Booking System

Priority LOW 17CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Salon Booking System WordPress plugin before 10.31.11 does not enforce a minimum of zero when subtracting a fixed-amount discount from a booking's total. An unauthenticated visitor who knows a valid discount code can create a confirmed booking stored with a negative total, which is an improper input validation flaw (CWE-20). The references include an exploit link.

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

Description from the CNA

The Salon Booking System WordPress plugin before 10.31.11 does not enforce a minimum of zero when subtracting a fixed-amount discount from a booking's total, allowing an unauthenticated visitor who knows a valid discount code to create a confirmed booking stored with a negative total.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00168 6th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Salon Booking System (Unknown): 10.31.11

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
UnknownSalon Booking Systembefore 10.31.1110.31.11Patch availableCNA
  • Salon Booking System VendorUnknown Affected before 10.31.11 Fixed in 10.31.11 Patch available CNA

Remediation

Update the Salon Booking System WordPress plugin to version 10.31.11 or later, which fixes this flaw.

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

  • Fix · CNA Salon Booking System (Unknown) Fixed in 10.31.11

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-110034
  2. 2026-10-19 Weakness changed · CISA ADP
  3. 2026-10-19 CISA SSVC decision points changed
  4. 2026-10-19 Alias added: GHSA-9wc6-98h9-ghvq

References

Exploit 1

Sources

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