GHSA-5H3G-6XHH-RG6P

Vulnerability from github – Published: 2026-05-04 21:07 – Updated: 2026-05-12 13:36
VLAI
Summary
OpenClaw: OpenShell FS bridge reads pin and verify the opened file before returning bytes
Details

Summary

OpenShell FS bridge reads pin and verify the opened file before returning bytes

Affected Packages / Versions

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

Impact

A time-of-check/time-of-use race around OpenShell sandbox filesystem reads could let a symlink swap cause bytes outside the intended mount root to be read.

Fix

OpenShell reads now open the file with no-follow semantics where available, validate the pinned file descriptor against the canonical mount root, reject unsafe hardlink/symlink cases, and use a strict fallback ancestor walk on platforms without fd-path readback.

Fix Commit(s)

  • 95119017c847c737bd113f0bff728c4666d79c45

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.

Thanks @VladimirEliTokarev for reporting.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
6.0 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "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-2026-44113"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-04T21:07:36Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\nOpenShell FS bridge reads pin and verify the opened file before returning bytes \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\nA time-of-check/time-of-use race around OpenShell sandbox filesystem reads could let a symlink swap cause bytes outside the intended mount root to be read.\n\n## Fix\nOpenShell reads now open the file with no-follow semantics where available, validate the pinned file descriptor against the canonical mount root, reject unsafe hardlink/symlink cases, and use a strict fallback ancestor walk on platforms without fd-path readback.\n\n## Fix Commit(s)\n- 95119017c847c737bd113f0bff728c4666d79c45\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\nThanks @VladimirEliTokarev for reporting.",
  "id": "GHSA-5h3g-6xhh-rg6p",
  "modified": "2026-05-12T13:36:34Z",
  "published": "2026-05-04T21:07:36Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-5h3g-6xhh-rg6p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44113"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/95119017c847c737bd113f0bff728c4666d79c45"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-time-of-check-time-of-use-race-condition-in-openshell-fs-bridge"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw: OpenShell FS bridge reads pin and verify the opened file before returning bytes"
}


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