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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.

PUBLISHED Reserved 2026-05-14 | Published 2026-05-14 | Updated 2026-05-14 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Default status
affected

Any version before 0.12.0
affected

95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191 (git)
unaffected

Credits

Chia Min Jun Lennon finder

References

github.com/openclaw/crabbox/pull/71 exploit

github.com/openclaw/crabbox/releases/tag/v0.12.0 release-notes

github.com/openclaw/crabbox/pull/71 issue-tracking

github.com/...ommit/95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191 patch

www.vulncheck.com/...e-escalation-via-agent-ticket-endpoints third-party-advisory

cve.org (CVE-2026-8629)

nvd.nist.gov (CVE-2026-8629)

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