CVE-2026-8629CWE-639

Crabbox < v0.12.0 Privilege Escalation via Agent Ticket Endpoints

High · published May 14, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
39.2
In the wild
Unconfirmed
What it is

Crabbox prior to v0.12.0 contains a privilege escalation vulnerability that allows users with shared visibility-only access to obtain Code, WebVNC, and Egress agent tickets by sending POST requests to ticket endpoints. Attackers can exploit insufficient access control checks on the /v1/leases/:id/code/ticket, /v1/leases/:id/webvnc/ticket, and /v1/leases/:id/egress/ticket endpoints to obtain bridge-agent tickets and impersonate trusted lease-side bridges despite having only visibility permissions.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00464 · 39.2th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-05-14T19:11Z
EPSS history
Timeline
  • 14 MAY 19:11Z
    Crabbox < v0.12.0 Privilege Escalation via Agent Ticket Endpoints
    cvelistv5