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Stored XSS and SSRF in Salon Booking System WordPress plugin

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Salon Booking System WordPress plugin before 10.31.11 is affected. It fetches a user-supplied image URL from the server without validating it and saves the response in a publicly accessible location under an attacker-chosen filename, which enables stored cross-site scripting (CWE-79). A user with the Salon Staff role or higher can make the server read internal-only resources and store an SVG file that runs scripts in the site origin for anyone who opens it. A public exploit is linked in the references.

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 validate a user-supplied image URL before fetching it server-side and writing the response to a publicly accessible location under an attacker-chosen filename, allowing users with the Salon Staff role or higher to force the server to read internal-only resources and disclose them, and to store a malicious SVG that runs arbitrary scripts in the site's origin for anyone who opens it.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th 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
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
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 plugin to version 10.31.11, which fixes the issue.

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

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

Fixed in the same release

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

  • Release ·

    Salon Booking System 10.31.11

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-76032 Privilege escalation to administrator in Salon Booking System pluginPriority LOW 33
    • TI-2026-76033 Missing authorization in Salon Booking System lets staff demote administratorsPriority LOW 24
    • TI-2026-76035 Salon Booking System discloses hidden coupon codes to subscribersPriority LOW 19

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-110033
  2. 2026-10-18 Alias added: GHSA-6fxp-r7r3-93x6

References

Sources