# CVE-2026-8634: Crabbox < v0.12.0 Environment Variable Information Disclosure

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

Crabbox prior to v0.12.0 contains an environment variable exposure vulnerability that allows attackers with access to a malicious or compromised repository to forward local secrets such as API tokens, cloud credentials, and broker tokens into the remote command environment. Attackers can exploit overly permissive environment variable allowlisting in repo-local Crabbox configuration to serialize sensitive environment variables into remote command execution, exposing credentials to the remote environment.

## 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/78
- 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/eaae40ae4ce009e60633f16f7f19600c74557f6f

## Affected products and versions

- openclaw / crabbox (github.com/openclaw/crabbox): ≥ 0; < 0.12.0 (affected, semver); eaae40ae4ce009e60633f16f7f19600c74557f6f (unaffected, git). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.95% as of 2026-11-08; percentile 61.64%

- SSVC: exploitation poc; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-94

## Exploit evidence

- exploit: https://github.com/openclaw/crabbox/pull/78 (ADP: CISA-ADP)

## References

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

- https://github.com/openclaw/crabbox/pull/78 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/openclaw/crabbox/commit/eaae40ae4ce009e60633f16f7f19600c74557f6f (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/crabbox-environment-variable-information-disclosure (CNA: VulnCheck; third-party-advisory)

- https://github.com/openclaw/crabbox/pull/78 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-8634; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-8634; retrieved 2026-11-08; source updated Not reported

Revision: 464add63b2fc9ab2824dbc6ac7804555846d0e22598607098c19cea256be029b

Canonical: https://y2.dev/cve/CVE-2026-8634

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