CVE-2026-41299: OpenClaw Gateway Chat.send ACP-only Provenance Guard Vulnerability

HIGH
Advisory Identifier: GHSA-6xg4-82hv-cp6f
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CWE-807 CWE-290
Published
Advisory Summary

CVE-2026-41299 is a HIGH gateway chat.send acp-only provenance guard vulnerability (CWE-807: Reliance on Untrusted Inputs in a Security Decision) affecting OpenClaw libraries in the npm ecosystem. The issue involves gateway chat.send acp-only provenance guard could be bypassed by client identity spoofing. Remediation is available by upgrading affected packages to version 2026.3.28.

CVE-2026-41299 at a Glance

CVE Identifier CVE-2026-41299
GHSA Identifier GHSA-6xg4-82hv-cp6f
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-807: Reliance on Untrusted Inputs in a Security Decision
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-41299

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: 2026.3.28 
npm install openclaw@2026.3.28
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-2026-41299, 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 2026.3.28), 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-807: Reliance on Untrusted Inputs in a Security Decision, where the product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism. 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 ACP-only provenance fields in `chat.send` were gated by self-declared client metadata from the WebSocket handshake rather than verified authorization state. ## Impact A normal authenticated operator client could spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge. ## Affected Component `src/gateway/server-methods/chat.ts, src/gateway/server/ws-connection/message-handler.ts` ## Fixed Versions - Affected: `<= 2026.3.24` - Patched: `>= 2026.3.28` - Latest stable `2026.3.28` contains the fix. ## Fix Fixed by commit `4b9542716c` (`Gateway: require verified scope for chat provenance`).

CVE-2026-41299 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.3.28
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.3.28
2026.3.28

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-6xg4-82hv-cp6f
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/4b9542716c26ac77652bcaa0f562043b298b409f
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw

Frequently Asked Questions

What is CVE-2026-41299?
CVE-2026-41299 is a security vulnerability in OpenClaw involving Gateway chat.send ACP-only provenance guard could be bypassed by client identity spoofing under CWE-807: Reliance on Untrusted Inputs in a Security Decision.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.3.28 across affected packages: openclaw.
What version fixes CVE-2026-41299?
Upgrading to 2026.3.28 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.3.28. Upgrade your dependency to 2026.3.28 or later.
What CWE is associated with CVE-2026-41299?
CVE-2026-41299 is classified under CWE-807: Reliance on Untrusted Inputs in a Security Decision (The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.).
How can I check npm dependencies for CVE-2026-41299?
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-6xg4-82hv-cp6f",
  "modified" : "2026-04-20T23:45:19Z",
  "published" : "2026-03-31T23:57:51Z",
  "aliases" : [ "CVE-2026-41299" ],
  "summary" : "OpenClaw: Gateway chat.send ACP-only provenance guard could be bypassed by client identity spoofing",
  "details" : "## Summary\n\nACP-only provenance fields in `chat.send` were gated by self-declared client metadata from the WebSocket handshake rather than verified authorization state.\n\n## Impact\n\nA normal authenticated operator client could spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge.\n\n## Affected Component\n\n`src/gateway/server-methods/chat.ts, src/gateway/server/ws-connection/message-handler.ts`\n\n## Fixed Versions\n\n- Affected: `<= 2026.3.24`\n- Patched: `>= 2026.3.28`\n- Latest stable `2026.3.28` contains the fix.\n\n## Fix\n\nFixed by commit `4b9542716c` (`Gateway: require verified scope for chat provenance`).",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.3.28"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.3.24"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-6xg4-82hv-cp6f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/4b9542716c26ac77652bcaa0f562043b298b409f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290", "CWE-807" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-31T23:57:51Z",
    "nvd_published_at" : null
  }
}