Vulnerability-Lookup

GHSA-4G9M-RFFV-H6WQ

Vulnerability from github – Published: 2026-05-14 21:30 – Updated: 2026-05-21 19:29

Summary

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

Details

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                  
                    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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openclaw/crabbox"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-8621"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-21T19:29:07Z",
    "nvd_published_at": "2026-05-14T19:16:39Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-4g9m-rffv-h6wq",
  "modified": "2026-05-21T19:29:07Z",
  "published": "2026-05-14T21:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8621"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/crabbox/pull/70"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/crabbox/commit/b657323f1d1c954cefc8444571fa6c45a8896e7f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/crabbox"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/crabbox/releases/tag/v0.12.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/crabbox-authentication-bypass-via-header-spoofing"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Crabbox: authentication bypass vulnerability that allows impersonation of others by spoofing identity headers"
}

CVE-2026-8621 (GCVE-0-2026-8621)

Vulnerability from cvelistv5 – Published: 2026-05-14 18:46 – Updated: 2026-07-14 22:03 X_Open Source

Title

Crabbox < v0.12.0 Authentication Bypass via Header Spoofing

Summary

Severity

8.7 (High)


                        
                          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

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-14 19:37 UTC

CWE

CWE-287 - Improper Authentication

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/openclaw/crabbox/releases/tag/…	release-notes
https://github.com/openclaw/crabbox/pull/70	issue-tracking
https://github.com/openclaw/crabbox/commit/b65732…	patch
https://www.vulncheck.com/advisories/crabbox-auth…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
openclaw	crabbox	Affected: 0 , < 0.12.0 (semver) Unaffected: b657323f1d1c954cefc8444571fa6c45a8896e7f (git)

Date Public

2026-05-14 18:45

Credits

Chia Min Jun Lennon

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2026-05-14T19:37:38.426098Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.