CVE-2026-8621 json
Crabbox < v0.12.0 Authentication Bypass via Header Spoofing
published 2026-05-14 5 mo ago modified 2026-11-08 25 h ago also EUVD-2026-30369 , GHSA-4g9m-rffv-h6wq , GO-2026-5120
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/openclaw/crabbox 0.12.0
- openclaw crabbox 0.12.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/openclaw/crabbox@b657323 commit
- github.com/openclaw/crabbox#70 pull request
- github.com/openclaw/crabbox/releases/tag/v0.12.0 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | 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 |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/openclaw/crabbox | <0.12.0 |
0.12.0 |
Affected products
- openclaw crabbox
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/openclaw/crabbox/pull/70
issue-tracking, patch, web
-
github.com
/openclaw/crabbox/commit/b657323f1d1c954cefc8444571fa6c45a8896e7f
patch, web
-
github.com
/openclaw/crabbox/releases/tag/v0.12.0
release-notes, web
-
vulncheck.com
/advisories/crabbox-authentication-bypass-via-header-spoofing
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-8621
advisory
-
github.com
/openclaw/crabbox
package
-
github.com
/advisories/GHSA-4g9m-rffv-h6wq
advisory
Sources
- CVE List CVE-2026-8621
- GitHub Advisory GHSA-4g9m-rffv-h6wq
- NVD CVE-2026-8621
- OSV GO-2026-5120
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