CVE-2026-32066: Openclaw Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-wr6m-jg37-68xh
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CWE-400
Published
Advisory Summary

CVE-2026-32066 is a MODERATE denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Openclaw libraries in the npm ecosystem. The issue involves openclaw has unbounded memory growth in zalo webhook via query-string key churn (unauthenticated dos). Remediation is available by upgrading affected packages to version 2026.3.1.

CVE-2026-32066 at a Glance

CVE Identifier CVE-2026-32066
GHSA Identifier GHSA-wr6m-jg37-68xh
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Openclaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-32066

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: 2026.3.1 
npm install openclaw@2026.3.1
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-2026-32066, 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 2026.3.1), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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 Unauthenticated requests to a reachable Zalo webhook endpoint could trigger unbounded in-memory key growth by varying query strings on the same valid webhook route. ### Impact An attacker could cause memory pressure and potential process instability or OOM, degrading availability. ### Fix Webhook security tracking now normalizes keys to matched webhook path semantics (query excluded) and bounds/prunes tracking state to prevent unbounded growth. ### Affected and Patched Versions - Affected: `<= 2026.2.26` - Patched: `2026.3.1`

CVE-2026-32066 Affected Openclaw Versions

1 component(s)
Fixed Versions:
2026.3.1
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.3.1
2026.3.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xh
Openclaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw

Frequently Asked Questions

What is CVE-2026-32066?
CVE-2026-32066 is a security vulnerability in Openclaw involving OpenClaw has unbounded memory growth in Zalo webhook via query-string key churn (unauthenticated DoS) under CWE-400: Uncontrolled Resource Consumption.
Which Openclaw versions are affected?
Affected versions include releases prior to 2026.3.1 across affected packages: openclaw.
What version fixes CVE-2026-32066?
Upgrading to 2026.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.3.1. Upgrade your dependency to 2026.3.1 or later.
What CWE is associated with CVE-2026-32066?
CVE-2026-32066 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2026-32066?
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-wr6m-jg37-68xh",
  "modified" : "2026-03-23T21:52:21Z",
  "published" : "2026-03-02T21:49:51Z",
  "aliases" : [ "CVE-2026-32066" ],
  "summary" : "OpenClaw has unbounded memory growth in Zalo webhook via query-string key churn (unauthenticated DoS)",
  "details" : "### Summary\nUnauthenticated requests to a reachable Zalo webhook endpoint could trigger unbounded in-memory key growth by varying query strings on the same valid webhook route.\n\n### Impact\nAn attacker could cause memory pressure and potential process instability or OOM, degrading availability.\n\n### Fix\nWebhook security tracking now normalizes keys to matched webhook path semantics (query excluded) and bounds/prunes tracking state to prevent unbounded growth.\n\n### Affected and Patched Versions\n- Affected: `<= 2026.2.26`\n- Patched: `2026.3.1`",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xh"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-02T21:49:51Z",
    "nvd_published_at" : null
  }
}