Vulnerability-Lookup

GHSA-M8V2-6WWH-R4GC

Vulnerability from github – Published: 2026-03-03 23:10 – Updated: 2026-03-18 21:52

Summary

OpenClaw's sandbox bind validation could bypass allowed-root and blocked-path checks via symlink-parent missing-leaf paths

Details

Summary

In openclaw up to and including 2026.2.23 (latest npm release as of February 24, 2026), sandbox bind-source validation could be bypassed when a bind source used a symlinked parent plus a non-existent leaf path.

Affected Packages / Versions

Package: openclaw (npm)
Affected: <= 2026.2.23
Patched: >= 2026.2.24 (planned next release)

Root Cause

validateBindMounts previously relied on full-path realpath only when the full source path already existed. For missing-leaf paths, parent symlink traversal was not fully canonicalized before allowed-root and blocked-path checks.

Security Impact

A source path that looked inside an allowed root could resolve outside that root (including blocked runtime paths) once the missing leaf was created, weakening sandbox bind-source boundary enforcement.

Fix

The validation path now canonicalizes through the nearest existing ancestor, then always re-checks the canonical path against both: - allowed source roots - blocked runtime paths

Verification

pnpm check
pnpm exec vitest run --config vitest.gateway.config.ts
pnpm test:fast
Added regression tests for symlink-parent + missing-leaf bypass patterns.

Fix Commit(s)

b5787e4abba0dcc6baf09051099f6773c1679ec1

Release Process Note

patched_versions is pre-set to the planned next release (2026.2.24) so after npm publish the advisory can be published without further field edits.

OpenClaw thanks @tdjackey for reporting.

Publication Update (2026-02-25)

openclaw@2026.2.24 is published on npm and contains the fix commit(s) listed above. This advisory now marks >= 2026.2.24 as patched.

Severity ?

7.0 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2026.2.23"
      },
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.2.24"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-27523"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-03T23:10:01Z",
    "nvd_published_at": "2026-03-18T02:16:23Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nIn `openclaw` up to and including **2026.2.23** (latest npm release as of **February 24, 2026**), sandbox bind-source validation could be bypassed when a bind source used a symlinked parent plus a non-existent leaf path.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected: `\u003c= 2026.2.23`\n- Patched: `\u003e= 2026.2.24` (planned next release)\n\n### Root Cause\n`validateBindMounts` previously relied on full-path realpath only when the full source path already existed. For missing-leaf paths, parent symlink traversal was not fully canonicalized before allowed-root and blocked-path checks.\n\n### Security Impact\nA source path that looked inside an allowed root could resolve outside that root (including blocked runtime paths) once the missing leaf was created, weakening sandbox bind-source boundary enforcement.\n\n### Fix\nThe validation path now canonicalizes through the nearest existing ancestor, then always re-checks the canonical path against both:\n- allowed source roots\n- blocked runtime paths\n\n### Verification\n- `pnpm check`\n- `pnpm exec vitest run --config vitest.gateway.config.ts`\n- `pnpm test:fast`\n- Added regression tests for symlink-parent + missing-leaf bypass patterns.\n\n### Fix Commit(s)\n- `b5787e4abba0dcc6baf09051099f6773c1679ec1`\n\n### Release Process Note\n`patched_versions` is pre-set to the planned next release (`2026.2.24`) so after npm publish the advisory can be published without further field edits.\n\nOpenClaw thanks @tdjackey for reporting.\n\n\n### Publication Update (2026-02-25)\n`openclaw@2026.2.24` is published on npm and contains the fix commit(s) listed above. This advisory now marks `\u003e= 2026.2.24` as patched.",
  "id": "GHSA-m8v2-6wwh-r4gc",
  "modified": "2026-03-18T21:52:35Z",
  "published": "2026-03-03T23:10:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-m8v2-6wwh-r4gc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27523"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/b5787e4abba0dcc6baf09051099f6773c1679ec1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-sandbox-bind-validation-bypass-via-symlink-parent-missing-leaf-paths"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw\u0027s sandbox bind validation could bypass allowed-root and blocked-path checks via symlink-parent missing-leaf paths"
}

CVE-2026-27523 (GCVE-0-2026-27523)

Vulnerability from cvelistv5 – Published: 2026-03-18 01:34 – Updated: 2026-03-18 15:39

Title

OpenClaw < 2026.2.24 - Sandbox Bind Validation Bypass via Symlink-Parent Missing-Leaf Paths

Summary

OpenClaw versions prior to 2026.2.24 contain a sandbox bind validation vulnerability allowing attackers to bypass allowed-root and blocked-path checks via symlinked parent directories with non-existent leaf paths. Attackers can craft bind source paths that appear within allowed roots but resolve outside sandbox boundaries once missing leaf components are created, weakening bind-source isolation enforcement.

Severity ?

6.9 (Medium)


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

6.1 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

VulnCheck

References

URL

Tags

	https://github.com/openclaw/openclaw/security/adv…	third-party-advisory
	https://github.com/openclaw/openclaw/commit/b5787…	patch
	https://www.vulncheck.com/advisories/openclaw-san…	third-party-advisory

Impacted products

	Vendor	Product	Version
	OpenClaw	OpenClaw	Affected: 0 , < 2026.2.24 (semver)

Date Public ?

2026-02-25 00:00

Credits

tdjackey

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

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-M8V2-6WWH-R4GC

Summary

Affected Packages / Versions

Root Cause

Security Impact

Fix

Verification

Fix Commit(s)

Release Process Note

Publication Update (2026-02-25)

CVE-2026-27523 (GCVE-0-2026-27523)

Tags

Sightings

Nomenclature