CVE-2026-41393: OpenClaw MacOS Tailnet DNS Spoofing & Vulnerability

HIGH
Advisory Identifier: GHSA-q9w8-cf67-r238
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CWE-350 CWE-346
Published
Advisory Summary

CVE-2026-41393 is a HIGH macos tailnet dns spoofing & vulnerability (CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action) affecting OpenClaw libraries in the npm ecosystem. The issue involves macos tailnet dns spoofing & credential exfiltration. Remediation is available by upgrading affected packages to version 2026.3.31.

CVE-2026-41393 at a Glance

CVE Identifier CVE-2026-41393
GHSA Identifier GHSA-q9w8-cf67-r238
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-41393

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: 2026.3.31 
npm install openclaw@2026.3.31
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-2026-41393, 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 2026.3.31), 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 macOS Wide-Area Discovery Accepts Arbitrary Tailnet Peer as DNS Authority and Exfiltrates Operator Credentials ## Current Maintainer Triage - Status: narrow - Normalized severity: medium - Assessment: Real shipped macOS discovery steering bug, but exploitation needs same-tailnet position, a CA-trusted endpoint, and user selection, so medium not high. ## Affected Packages / Versions - Package: `openclaw` (npm) - Latest published npm version: `2026.3.31` - Vulnerable version range: `<=2026.3.28` - Patched versions: `>= 2026.3.31` - First stable tag containing the fix: `v2026.3.31` ## Fix Commit(s) - `a23c33a681f8c1b22dc793995acc4c5c4b568346` — 2026-03-31T10:04:11+01:00 OpenClaw thanks @nexrin for reporting.

CVE-2026-41393 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.3.31
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.3.31
2026.3.31

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-q9w8-cf67-r238
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/a23c33a681f8c1b22dc793995acc4c5c4b568346
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
OpenClaw Release RELEASE
https://github.com/openclaw/openclaw/releases/tag/v2026.3.31

Frequently Asked Questions

What is CVE-2026-41393?
CVE-2026-41393 is a security vulnerability in OpenClaw involving macOS Tailnet DNS Spoofing & Credential Exfiltration under CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.3.31 across affected packages: openclaw.
What version fixes CVE-2026-41393?
Upgrading to 2026.3.31 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.3.31. Upgrade your dependency to 2026.3.31 or later.
What CWE is associated with CVE-2026-41393?
CVE-2026-41393 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-2026-41393?
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-q9w8-cf67-r238",
  "modified" : "2026-04-28T18:20:31Z",
  "published" : "2026-04-03T03:22:32Z",
  "aliases" : [ "CVE-2026-41393" ],
  "summary" : "OpenClaw: macOS Tailnet DNS Spoofing & Credential Exfiltration",
  "details" : "## Summary\nmacOS Wide-Area Discovery Accepts Arbitrary Tailnet Peer as DNS Authority and Exfiltrates Operator Credentials\n\n## Current Maintainer Triage\n- Status: narrow\n- Normalized severity: medium\n- Assessment: Real shipped macOS discovery steering bug, but exploitation needs same-tailnet position, a CA-trusted endpoint, and user selection, so medium not high.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published npm version: `2026.3.31`\n- Vulnerable version range: `<=2026.3.28`\n- Patched versions: `>= 2026.3.31`\n- First stable tag containing the fix: `v2026.3.31`\n\n## Fix Commit(s)\n- `a23c33a681f8c1b22dc793995acc4c5c4b568346` — 2026-03-31T10:04:11+01:00\n\nOpenClaw thanks @nexrin for reporting.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.3.31"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.3.28"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-q9w8-cf67-r238"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/a23c33a681f8c1b22dc793995acc4c5c4b568346"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/releases/tag/v2026.3.31"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346", "CWE-350" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-03T03:22:32Z",
    "nvd_published_at" : null
  }
}