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Vulnerabilities CVE-2026-8621

CVE-2026-8621

High
Open
TLP:CLEAR

Crabbox < v0.12.0 Authentication Bypass via Header Spoofing

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Description

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.

Details

CVSS Score
8.7
EPSS Score
0.36%

29th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
May 14, 2026
Last Modified
May 14, 2026
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