CVE-2026-108758

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 27.1% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-11 12:19Z17 DAYS AGO

Last updated

2026-10-13 20:01Z15 DAYS AGO

Reserved

2026-10-11

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-639Authorization Bypass Through User-Controlled KeyBase

Data version

5.2

Document digest

feff70b28920f25462c771987c6af6e77d187774d0ea8f5adb174eb21d13ec75

• hackmd.iohttps://hackmd.io/@haind/easyappointments-booking-register-appointment-takeoverthird-party-advisory
• github.comhttps://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587technical-description
• github.comhttps://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150patch
• github.comhttps://github.com/alextselegidis/easyappointmentsproduct
• www.vulncheck.comVulnCheck Advisory: Easy!Appointments through 1.6.0 Authorization Bypass via booking/register Endpointhttps://www.vulncheck.com/advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpointthird-party-advisory