CVE-2026-41407: OpenClaw Shared-secret Comparison Call Sites Leaked Vulnerability

MODERATE
Advisory Identifier: GHSA-jj6q-rrrf-h66h
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CVSS 3.7
CWE-208
Published
Advisory Summary

CVE-2026-41407 is a MODERATE (CVSS 3.7) shared-secret comparison call sites leaked vulnerability (CWE-208: Observable Timing Discrepancy) affecting OpenClaw libraries in the npm ecosystem. The issue involves shared-secret comparison call sites leaked length information through timing. Remediation is available by upgrading affected packages to version 2026.4.2.

CVE-2026-41407 at a Glance

CVE Identifier CVE-2026-41407
GHSA Identifier GHSA-jj6q-rrrf-h66h
Severity MODERATE
CVSS v3.1 Base Score 3.7
CWE Classification CWE-208: Observable Timing Discrepancy
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 3.7

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
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-2026-41407

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-2026-41407, 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-208: Observable Timing Discrepancy, where two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. 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, several shared-secret comparison call sites still used early length-mismatch checks instead of the shared fixed-length comparison helper. Those paths could leak secret-length information through measurable timing differences. ## Impact The affected paths exposed a low-severity timing side channel on secret comparison. The issue did not by itself demonstrate auth bypass, but it weakened the intended constant-time handling for shared secrets. ## 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) - `be10ecef770a4654519869c3641bbb91087c8c7b` — reuse the shared secret comparison helper at affected call sites ## 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 @kexinoh of Tencent zhuque Lab (https://github.com/Tencent/AI-Infra-Guard) for reporting.

CVE-2026-41407 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-jj6q-rrrf-h66h
NVD — CVE-2026-41407 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41407
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/be10ecef770a4654519869c3641bbb91087c8c7b
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-timing-side-channel-in-shared-secret-comparison

Frequently Asked Questions

What is CVE-2026-41407?
CVE-2026-41407 is a security vulnerability in OpenClaw involving Shared-secret comparison call sites leaked length information through timing under CWE-208: Observable Timing Discrepancy.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.2 across affected packages: openclaw.
What version fixes CVE-2026-41407?
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-2026-41407?
CVE-2026-41407 has a CVSS v3.1 base score of 3.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-41407?
CVE-2026-41407 is classified under CWE-208: Observable Timing Discrepancy (Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.).
How can I check npm dependencies for CVE-2026-41407?
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-jj6q-rrrf-h66h",
  "modified" : "2026-05-06T02:40:50Z",
  "published" : "2026-04-07T18:16:03Z",
  "aliases" : [ "CVE-2026-41407" ],
  "summary" : "OpenClaw: Shared-secret comparison call sites leaked length information through timing",
  "details" : "## Summary\n\nBefore OpenClaw 2026.4.2, several shared-secret comparison call sites still used early length-mismatch checks instead of the shared fixed-length comparison helper. Those paths could leak secret-length information through measurable timing differences.\n\n## Impact\n\nThe affected paths exposed a low-severity timing side channel on secret comparison. The issue did not by itself demonstrate auth bypass, but it weakened the intended constant-time handling for shared secrets.\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- `be10ecef770a4654519869c3641bbb91087c8c7b` — reuse the shared secret comparison helper at affected call sites\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 @kexinoh of Tencent zhuque Lab (https://github.com/Tencent/AI-Infra-Guard) for reporting.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/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-jj6q-rrrf-h66h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41407"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/be10ecef770a4654519869c3641bbb91087c8c7b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-timing-side-channel-in-shared-secret-comparison"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-208" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-07T18:16:03Z",
    "nvd_published_at" : "2026-04-28T19:37:44Z"
  }
}