# CVE-2026-8629: Crabbox < v0.12.0 Privilege Escalation via Agent Ticket Endpoints

Status: published. Published: 2026-05-14. Updated: 2026-11-08.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/openclaw/crabbox/pull/71
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/openclaw/crabbox/commit/95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191

## Affected products and versions

- openclaw / crabbox (openclaw/crabbox): ≥ 0; < 0.12.0 (affected, semver); 95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191 (unaffected, git). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.6 (high); 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; source: CNA: VulnCheck

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.34% as of 2026-11-08; percentile 27.37%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-639

## Exploit evidence

- exploit: https://github.com/openclaw/crabbox/pull/71 (ADP: CISA-ADP)

## References

- https://github.com/openclaw/crabbox/releases/tag/v0.12.0 (CNA: VulnCheck; release-notes)

- https://github.com/openclaw/crabbox/pull/71 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/openclaw/crabbox/commit/95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191 (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/crabbox-privilege-escalation-via-agent-ticket-endpoints (CNA: VulnCheck; third-party-advisory)

- https://github.com/openclaw/crabbox/pull/71 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-8629; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-8629; retrieved 2026-11-08; source updated Not reported

Revision: eef73695fe18920336ca6a9235714ead01c38c219804528932f69bec83e4a67e

Canonical: https://y2.dev/cve/CVE-2026-8629

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.