CVE-2026-43582: OpenClaw Browser SSRF Hostname Validation Could Vulnerability

MODERATE
Advisory Identifier: GHSA-xq94-r468-qwgj
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CVSS 6.3
CWE-350 CWE-918
Published
Advisory Summary

CVE-2026-43582 is a MODERATE (CVSS 6.3) browser ssrf hostname validation could vulnerability (CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action) affecting OpenClaw libraries in the npm ecosystem. The issue involves browser ssrf hostname validation could be bypassed by dns rebinding. Remediation is available by upgrading affected packages to version 2026.4.10.

CVE-2026-43582 at a Glance

CVE Identifier CVE-2026-43582
GHSA Identifier GHSA-xq94-r468-qwgj
Severity MODERATE
CVSS v3.1 Base Score 6.3
CWE Classification CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.3

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

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

How to Fix CVE-2026-43582

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-2026-43582, 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-350: Reliance on Reverse DNS Resolution for a Security-Critical Action, where the product performs reverse dns resolution on an ip address to obtain the hostname and make a security decision, but it does not properly ensure that the ip address is truly associated with the hostname. 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 SSRF hostname validation could be bypassed by DNS rebinding. ## Affected Packages / Versions - Package: `openclaw` - Ecosystem: npm - Affected versions: `< 2026.4.10` - Patched versions: `>= 2026.4.10` ## Impact Browser navigation policy could validate a hostname/IP resolution that differed from the address Chromium ultimately used, allowing DNS rebinding style SSRF pivots. ## Technical Details The fix tightens strict browser hostname navigation so unallowlisted hostname URLs fail closed under restrictive policy. ## Fix The issue was fixed in #64367. The first stable tag containing the fix is `v2026.4.10`, and `openclaw@2026.4.14` includes the fix. ## Fix Commit(s) - `121c452d666d4749744dc2089287d0227aae2ed3` - PR: #64367 ## 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 @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.

CVE-2026-43582 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-xq94-r468-qwgj
NVD — CVE-2026-43582 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43582
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw/pull/64367
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/121c452d666d4749744dc2089287d0227aae2ed3
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-dns-rebinding-ssrf-via-hostname-validation-bypass

Frequently Asked Questions

What is CVE-2026-43582?
CVE-2026-43582 is a security vulnerability in OpenClaw involving Browser SSRF hostname validation could be bypassed by DNS rebinding under CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.10 across affected packages: openclaw.
What version fixes CVE-2026-43582?
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-2026-43582?
CVE-2026-43582 has a CVSS v3.1 base score of 6.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2026-43582?
CVE-2026-43582 is classified under CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action (The product performs reverse DNS resolution on an IP address to obtain the hostname and make a security decision, but it does not properly ensure that the IP address is truly associated with the hostname.).
How can I check npm dependencies for CVE-2026-43582?
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-xq94-r468-qwgj",
  "modified" : "2026-05-12T13:35:04Z",
  "published" : "2026-04-17T21:58:01Z",
  "aliases" : [ "CVE-2026-43582" ],
  "summary" : "OpenClaw: Browser SSRF hostname validation could be bypassed by DNS rebinding",
  "details" : "## Summary\n\nBrowser SSRF hostname validation could be bypassed by DNS rebinding.\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\nBrowser navigation policy could validate a hostname/IP resolution that differed from the address Chromium ultimately used, allowing DNS rebinding style SSRF pivots.\n\n## Technical Details\n\nThe fix tightens strict browser hostname navigation so unallowlisted hostname URLs fail closed under restrictive policy.\n\n## Fix\n\nThe issue was fixed in #64367. 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- `121c452d666d4749744dc2089287d0227aae2ed3`\n- PR: #64367\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 @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/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-xq94-r468-qwgj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43582"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/pull/64367"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/121c452d666d4749744dc2089287d0227aae2ed3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-dns-rebinding-ssrf-via-hostname-validation-bypass"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-350", "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-17T21:58:01Z",
    "nvd_published_at" : null
  }
}