🛡️ CVE-2026-8621 — crabbox

🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-287 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Crabbox: authentication bypass vulnerability that allows impersonation of others by spoofing identity headers

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a shared token to bypass authorization checks and access owner/org-scoped lease operations belonging to victim accounts.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-8621 is classified as CWE-287: Improper Authentication. The identity of the caller is not established correctly, so an attacker can act as another user.

Affected software

CVE-2026-8621 is recorded against 2 packages.

  • github.com/openclaw/crabbox
  • unknown

Timeline and source

Published on 14 May 2026 and last revised on 25 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
www.vulncheck.com (Web)

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-287
Public Exploit ✅ No
Source NVD
Published 2026-05-14
Updated 2026-08-12
Modified 2026-06-25

Affected Packages

Software From version Fixed in
github.com/openclaw/crabbox — —
unknown — —

Similar Threats

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