GHSA-c29c-2q9c-pc86: OpenClaw Slack AllowFrom Could Bind To Vulnerability

HIGH
Share
CWE-290
Published
Advisory Summary

GHSA-c29c-2q9c-pc86 is a HIGH slack allowfrom could bind to vulnerability (CWE-290: Authentication Bypass by Spoofing) affecting OpenClaw libraries in the npm ecosystem. The issue involves slack allowfrom could bind to mutable display names. Remediation is available by upgrading affected packages to version 2026.5.3.

GHSA-c29c-2q9c-pc86 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-c29c-2q9c-pc86
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-290: Authentication Bypass by Spoofing
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-c29c-2q9c-pc86

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: 2026.5.3 
npm install openclaw@2026.5.3
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 GHSA-c29c-2q9c-pc86, 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 2026.5.3), 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-290: Authentication Bypass by Spoofing, where this attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. 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 Slack allowFrom could bind to mutable display names. In affected versions, a Slack account able to change display name metadata could match a policy entry through mutable display metadata. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could receive agent access intended for another Slack identity. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.5.3`. ### Mitigations use stable Slack user IDs in allowlists until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.

GHSA-c29c-2q9c-pc86 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.5.3
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.5.3
2026.5.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-c29c-2q9c-pc86
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw

Frequently Asked Questions

What is GHSA-c29c-2q9c-pc86?
GHSA-c29c-2q9c-pc86 is a security vulnerability in OpenClaw involving Slack allowFrom could bind to mutable display names under CWE-290: Authentication Bypass by Spoofing.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.5.3 across affected packages: openclaw.
What version fixes GHSA-c29c-2q9c-pc86?
Upgrading to 2026.5.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.5.3. Upgrade your dependency to 2026.5.3 or later.
What CWE is associated with GHSA-c29c-2q9c-pc86?
GHSA-c29c-2q9c-pc86 is classified under CWE-290: Authentication Bypass by Spoofing (This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.).
How can I check npm dependencies for GHSA-c29c-2q9c-pc86?
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-c29c-2q9c-pc86",
  "modified" : "2026-07-02T16:43:38Z",
  "published" : "2026-07-02T16:43:38Z",
  "aliases" : [ ],
  "summary" : "OpenClaw: Slack allowFrom could bind to mutable display names",
  "details" : "### Summary\n\nSlack allowFrom could bind to mutable display names. In affected versions, a Slack account able to change display name metadata could match a policy entry through mutable display metadata.\n\nThis advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed.\n\n### Impact\n\nWhen the affected feature is enabled and reachable, this could receive agent access intended for another Slack identity. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path.\n\n### Patched Versions\n\nThe first stable patched version is `2026.5.3`.\n\n### Mitigations\n\nuse stable Slack user IDs in allowlists until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.5.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.5.3-1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-c29c-2q9c-pc86"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-02T16:43:38Z",
    "nvd_published_at" : null
  }
}