CVE-2026-8629

high

Description

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.

References

https://www.vulncheck.com/advisories/crabbox-privilege-escalation-via-agent-ticket-endpoints

https://github.com/openclaw/crabbox/releases/tag/v0.12.0

https://github.com/openclaw/crabbox/pull/71

https://github.com/openclaw/crabbox/commit/95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191

Details

Source: Mitre, NVD

Published: 2026-05-14

Updated: 2026-05-15

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

CVSS v4

Base Score: 8.6

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

Severity: High

EPSS

EPSS: 0.00021