CVE-2026-42439: OpenClaw Browser Tabs Action Select And Vulnerability

MODERATE
Advisory Identifier: GHSA-rj2p-j66c-mgqh
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CVSS 8.5
CWE-862 CWE-918
Published
Advisory Summary

CVE-2026-42439 is a MODERATE (CVSS 8.5) browser tabs action select and vulnerability (CWE-862: Missing Authorization) affecting OpenClaw libraries in the npm ecosystem. The issue involves browser tabs action select and close routes bypassed ssrf policy. Remediation is available by upgrading affected packages to version 2026.4.10.

CVE-2026-42439 at a Glance

CVE Identifier CVE-2026-42439
GHSA Identifier GHSA-rj2p-j66c-mgqh
Severity MODERATE
CVSS v3.1 Base Score 8.5
CWE Classification CWE-862: Missing Authorization
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-42439

To remediate this vulnerability, upgrade all affected OpenClaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openclaw fixed: 2026.4.10 
npm install openclaw@2026.4.10
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls openclaw

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-42439, inspect your project dependencies using npm:

npm ls openclaw

Analyze the terminal output to locate any version of OpenClaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.4.10), your application is affected.

Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In OpenClaw, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary Browser tabs action select and close routes bypassed SSRF policy. ## Affected Packages / Versions - Package: `openclaw` - Ecosystem: npm - Affected versions: `< 2026.4.10` - Patched versions: `>= 2026.4.10` ## Impact The browser `/tabs/action` select and close branches could operate on targets without enforcing configured browser SSRF policy, weakening tab-level navigation protections. ## Technical Details The fix enforces browser SSRF policy in the select and close tab-action branches. ## Fix The issue was fixed in #63332. The first stable tag containing the fix is `v2026.4.10`, and `openclaw@2026.4.14` includes the fix. ## Fix Commit(s) - `48c0347921b7e9438af0312968fc360ca88023f3` - PR: #63332 ## Release Process Note Users should upgrade to `openclaw` 2026.4.10 or newer. The latest npm release, `2026.4.14`, already includes the fix. ## Credits Thanks to @tdjackey for reporting this issue.

CVE-2026-42439 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.4.10
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.4.10
2026.4.10

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-rj2p-j66c-mgqh
NVD — CVE-2026-42439 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42439
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw/pull/63332
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/48c03479211799ec3c1305ad69037cea25ba0e1e
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/48c0347921b7e9438af0312968fc360ca88023f3
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-ssrf-policy-bypass-in-browser-tabs-action-routes

Frequently Asked Questions

What is CVE-2026-42439?
CVE-2026-42439 is a security vulnerability in OpenClaw involving Browser tabs action select and close routes bypassed SSRF policy under CWE-862: Missing Authorization.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.10 across affected packages: openclaw.
What version fixes CVE-2026-42439?
Upgrading to 2026.4.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.4.10. Upgrade your dependency to 2026.4.10 or later.
What is the CVSS score of CVE-2026-42439?
CVE-2026-42439 has a CVSS v3.1 base score of 8.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
What CWE is associated with CVE-2026-42439?
CVE-2026-42439 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check npm dependencies for CVE-2026-42439?
Run the dependency tree command: 'npm ls openclaw'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rj2p-j66c-mgqh",
  "modified" : "2026-05-08T19:32:59Z",
  "published" : "2026-04-17T22:01:57Z",
  "aliases" : [ "CVE-2026-42439" ],
  "summary" : "OpenClaw: Browser tabs action select and close routes bypassed SSRF policy",
  "details" : "## Summary\n\nBrowser tabs action select and close routes bypassed SSRF policy.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `< 2026.4.10`\n- Patched versions: `>= 2026.4.10`\n\n## Impact\n\nThe browser `/tabs/action` select and close branches could operate on targets without enforcing configured browser SSRF policy, weakening tab-level navigation protections.\n\n## Technical Details\n\nThe fix enforces browser SSRF policy in the select and close tab-action branches.\n\n## Fix\n\nThe issue was fixed in #63332. The first stable tag containing the fix is `v2026.4.10`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `48c0347921b7e9438af0312968fc360ca88023f3`\n- PR: #63332\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.10 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Credits\n\nThanks to @tdjackey for reporting this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.4.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-rj2p-j66c-mgqh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42439"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/pull/63332"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/48c03479211799ec3c1305ad69037cea25ba0e1e"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/48c0347921b7e9438af0312968fc360ca88023f3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-ssrf-policy-bypass-in-browser-tabs-action-routes"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862", "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-17T22:01:57Z",
    "nvd_published_at" : "2026-05-05T12:16:18Z"
  }
}