Salon Booking System – Free Version <= 10.30.33 - Unauthenticated Google Calendar Connection Hijack via OAuth Callback
Published Aug 10, 2026
4.8
MEDIUMCVSS 3.1
EPSS 0.27%
Description
The Salon Booking System WordPress plugin through 10.30.33 does not perform any capability check or validate an OAuth state value on its Google Calendar authorization callback, which is also hooked for unauthenticated users, allowing an unauthenticated attacker to overwrite the site's stored Google Calendar connection tokens with attacker-controlled ones and hijack the integration. Exploitation requires the site to have configured its own Google OAuth client for the calendar feature.
Affected products
- Vendor n/a Product Salon Booking System Defaultn/a
- Version 0StatusaffectedConstraints<=10.30.33
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Salon Booking System | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Aug 11, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.27% (0.00272) | 17.72th | v5 (v2026.06.15) |
| Aug 10, 2026 | 0.14% (0.00136) | 3.49th | v5 (v2026.06.15) |
References (1)
- https://wpscan.com/vulnerability/a116db0a-38ea-43e3-a9cd-991768ce3e07/ exploitvdb-entrytechnical-description
| Link | Providers | Tags |
|---|---|---|
| https://wpscan.com/vulnerability/a116db0a-38ea-43e3-a9cd-991768ce3e07/ | exploitvdb-entrytechnical-description |
Change history (0)
No recorded changes yet.