CVE-2026-18776 json
TrueBooker Appointment Booking < 1.2.7 - Unauthenticated Account Takeover via Multiple AJAX Actions
published 2026-08-19 2 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-62281
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to change the email address of arbitrary users, including administrators, and subsequently take over their account via the password reset flow.
Patch / fix
- Unknown TrueBooker 1.2.7
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/4b6abb2d-941b-429f-a480-33d1aafad450/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown TrueBooker
Classification
- Weakness
-
- CWE-284 Improper Access Control
- Technology feeds
References
-
wpscan.com
/vulnerability/4b6abb2d-941b-429f-a480-33d1aafad450/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-18776
- NVD CVE-2026-18776
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.