Vulnerability-Lookup

GHSA-R6XH-PQHR-V4XH

Vulnerability from github – Published: 2026-05-04 20:22 – Updated: 2026-05-12 13:37

Summary

OpenClaw: MCP loopback owner context is derived from server-issued bearer tokens

Details

Summary

MCP loopback owner context is derived from server-issued bearer tokens.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <= 2026.4.21
Fixed version: 2026.4.22

Impact

The loopback MCP path accepted spoofable owner-context metadata from request headers, which could allow a non-owner loopback client to present itself as owner for owner-gated operations.

Fix

The MCP loopback runtime now issues separate owner and non-owner bearer tokens and derives senderIsOwner exclusively from which token authenticated the request. The spoofable sender-owner header is no longer emitted or trusted.

Fix Commit(s)

3cb1a56bfc9579a0f2336f9cfa12a8a744332a19

Verification

The fix commit is contained in the public v2026.4.22 tag.
openclaw@2026.4.22 is published on npm and the compiled package contains the fix.
Focused regression coverage for this path passed before publication.

OpenClaw thanks @VladimirEliTokarev for reporting.

Severity

7.8 (High)


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

8.5 (High)


                  
                    CVSS:4.0/AV:L/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

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2026.4.21"
      },
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.4.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44118"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284",
      "CWE-290"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-04T20:22:42Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\nMCP loopback owner context is derived from server-issued bearer tokens.\n\n## Affected Packages / Versions\n- Package: openclaw (npm)\n- Affected versions: \u003c= 2026.4.21\n- Fixed version: 2026.4.22\n\n## Impact\nThe loopback MCP path accepted spoofable owner-context metadata from request headers, which could allow a non-owner loopback client to present itself as owner for owner-gated operations.\n\n## Fix\nThe MCP loopback runtime now issues separate owner and non-owner bearer tokens and derives senderIsOwner exclusively from which token authenticated the request. The spoofable sender-owner header is no longer emitted or trusted.\n\n## Fix Commit(s)\n- 3cb1a56bfc9579a0f2336f9cfa12a8a744332a19\n\n## Verification\n- The fix commit is contained in the public v2026.4.22 tag.\n- openclaw@2026.4.22 is published on npm and the compiled package contains the fix.\n- Focused regression coverage for this path passed before publication.\n\nOpenClaw thanks @VladimirEliTokarev for reporting.",
  "id": "GHSA-r6xh-pqhr-v4xh",
  "modified": "2026-05-12T13:37:11Z",
  "published": "2026-05-04T20:22:42Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-r6xh-pqhr-v4xh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44118"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/3cb1a56bfc9579a0f2336f9cfa12a8a744332a19"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-owner-context-spoofing-via-bearer-token-header"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw: MCP loopback owner context is derived from server-issued bearer tokens"
}

CVE-2026-44118 (GCVE-0-2026-44118)

Vulnerability from cvelistv5 – Published: 2026-05-06 19:49 – Updated: 2026-05-07 17:22 X_Open Source

Title

OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Token Header

Summary

OpenClaw before 2026.4.22 derives loopback MCP owner context from spoofable server-issued bearer tokens in request headers. Non-owner loopback clients can present themselves as owner to bypass owner-gated operations by manipulating the sender-owner header metadata.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck

References

3 references

URL	Tags
https://github.com/openclaw/openclaw/security/adv…	vendor-advisory
https://github.com/openclaw/openclaw/commit/3cb1a…	patch
https://www.vulncheck.com/advisories/openclaw-own…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
OpenClaw	OpenClaw	Affected: 0 , < 2026.4.22 (semver) Unaffected: 2026.4.22 (semver)

Date Public

2026-04-23 00:00

Credits

vladimir tokarev (@VladimirEliTokarev)

Show details on NVD website

JSON

To clipboard

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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.

Action not permitted

GHSA-R6XH-PQHR-V4XH

Summary

Affected Packages / Versions

Impact

Fix

Fix Commit(s)

Verification

CVE-2026-44118 (GCVE-0-2026-44118)

Tags

Sightings

Nomenclature