CVE-2026-41339: OpenClaw Gateway Hello Snapshots Exposed Host Vulnerability

MODERATE
Advisory Identifier: GHSA-2f7j-rp58-mr42
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CVSS 4.3
CWE-200
Published
Advisory Summary

CVE-2026-41339 is a MODERATE (CVSS 4.3) gateway hello snapshots exposed host vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting OpenClaw libraries in the npm ecosystem. The issue involves gateway hello snapshots exposed host config and state paths to non-admin clients. Remediation is available by upgrading affected packages to version 2026.4.2.

CVE-2026-41339 at a Glance

CVE Identifier CVE-2026-41339
GHSA Identifier GHSA-2f7j-rp58-mr42
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 4.3

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:U/C:L/I:N/A:N).

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

How to Fix CVE-2026-41339

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: 2026.4.2 
npm install openclaw@2026.4.2
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-2026-41339, 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 2026.4.2), 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. 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 Before OpenClaw 2026.4.2, the Gateway `connect` success snapshot exposed local `configPath` and `stateDir` metadata to non-admin clients. Low-privilege authenticated clients could learn host filesystem layout and deployment details that were not needed for their role. ## Impact A non-admin client could recover host-specific filesystem paths and related deployment metadata, aiding host fingerprinting and chained attacks. This was an information-disclosure issue, not a direct authorization bypass. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<= 2026.4.1` - Patched versions: `>= 2026.4.2` - Latest published npm version: `2026.4.1` ## Fix Commit(s) - `676b748056b5efca6f1255708e9dd9469edf5e2e` — limit connect snapshot metadata to admin-scoped clients ## Release Process Note The fix is present on `main` and is staged for OpenClaw `2026.4.2`. Publish this advisory after the `2026.4.2` npm release is live. Thanks @topsec-bunney for reporting.

CVE-2026-41339 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.4.2
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.4.2
2026.4.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-2f7j-rp58-mr42
NVD — CVE-2026-41339 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41339
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/676b748056b5efca6f1255708e9dd9469edf5e2e
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-information-disclosure-via-gateway-connect-snapshot

Frequently Asked Questions

What is CVE-2026-41339?
CVE-2026-41339 is a security vulnerability in OpenClaw involving Gateway hello snapshots exposed host config and state paths to non-admin clients under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.2 across affected packages: openclaw.
What version fixes CVE-2026-41339?
Upgrading to 2026.4.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.4.2. Upgrade your dependency to 2026.4.2 or later.
What is the CVSS score of CVE-2026-41339?
CVE-2026-41339 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-41339?
CVE-2026-41339 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check npm dependencies for CVE-2026-41339?
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-2f7j-rp58-mr42",
  "modified" : "2026-05-06T23:24:51Z",
  "published" : "2026-04-07T18:15:44Z",
  "aliases" : [ "CVE-2026-41339" ],
  "summary" : "OpenClaw: Gateway hello snapshots exposed host config and state paths to non-admin clients",
  "details" : "## Summary\n\nBefore OpenClaw 2026.4.2, the Gateway `connect` success snapshot exposed local `configPath` and `stateDir` metadata to non-admin clients. Low-privilege authenticated clients could learn host filesystem layout and deployment details that were not needed for their role.\n\n## Impact\n\nA non-admin client could recover host-specific filesystem paths and related deployment metadata, aiding host fingerprinting and chained attacks. This was an information-disclosure issue, not a direct authorization bypass.\n\n## Affected Packages / Versions\n\n- Package: `openclaw` (npm)\n- Affected versions: `<= 2026.4.1`\n- Patched versions: `>= 2026.4.2`\n- Latest published npm version: `2026.4.1`\n\n## Fix Commit(s)\n\n- `676b748056b5efca6f1255708e9dd9469edf5e2e` — limit connect snapshot metadata to admin-scoped clients\n\n## Release Process Note\n\nThe fix is present on `main` and is staged for OpenClaw `2026.4.2`. Publish this advisory after the `2026.4.2` npm release is live.\n\nThanks @topsec-bunney for reporting.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.4.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.4.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-2f7j-rp58-mr42"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41339"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/676b748056b5efca6f1255708e9dd9469edf5e2e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-information-disclosure-via-gateway-connect-snapshot"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-07T18:15:44Z",
    "nvd_published_at" : null
  }
}