RCE in Openclaw Crabbox
CVE-2026-8634
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.010 · change: +0.003
Affected products
- Openclaw Crabbox — versions 0, eaae40ae4ce009e60633f16f7f19600c74557f6f
Weakness classification (CWE)
References
- github.com/openclaw/crabbox/releases/tag/v0.12.0 (release-notes)
- github.com/openclaw/crabbox/pull/78 (issue-tracking)
- github.com/openclaw/crabbox/commit/eaae40ae4ce009e60633f16f7f19600c74557f6f (patch)
- www.vulncheck.com/advisories/crabbox-environment-variable-information-disclosure (third-party-advisory)
Frequently asked questions
- What is CVE-2026-8634?
- CVE-2026-8634 is a critical-severity vulnerability in Openclaw Crabbox, classified under Code Injection. CVSS score: 9.1/10. Published 2026-05-14.
- How severe is CVE-2026-8634?
- Critical severity. CVSS v3 base score is 9.1 out of 10.