CVE-2026-41358: OpenClaw Slack Thread Context Could Include Vulnerability

LOW
Advisory Identifier: GHSA-qm77-8qjp-4vcm
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CVSS 5.4
CWE-346
Published
Advisory Summary

CVE-2026-41358 is a LOW (CVSS 5.4) slack thread context could include vulnerability (CWE-346: Origin Validation Error) affecting OpenClaw libraries in the npm ecosystem. The issue involves slack thread context could include messages from non-allowlisted senders. Remediation is available by upgrading affected packages to version 2026.4.2.

CVE-2026-41358 at a Glance

CVE Identifier CVE-2026-41358
GHSA Identifier GHSA-qm77-8qjp-4vcm
Severity LOW
CVSS v3.1 Base Score 5.4
CWE Classification CWE-346: Origin Validation Error
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

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

How to Fix CVE-2026-41358

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-2026-41358, 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-346: Origin Validation Error, where the product does not properly verify that the source of data or communication is valid. 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, Slack thread starter and thread-history context fetched through the API was not filtered by the effective sender allowlist. Messages from non-allowlisted senders could still enter the agent context when an allowlisted user replied in the same thread. ## Impact A Slack deployment that relied on sender allowlists could still feed non-allowlisted thread content into the model context through thread history. This was a sender-access-control bypass on Slack thread context, not a direct channel-auth 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) - `ac5bc4fb37becc64a2ec314864cca1565e921f2d` — filter Slack thread context by the effective allowlist ## 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. OpenClaw thanks @AntAISecurityLab for reporting.

CVE-2026-41358 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-qm77-8qjp-4vcm
NVD — CVE-2026-41358 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41358
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/ac5bc4fb37becc64a2ec314864cca1565e921f2d
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-via-slack-thread-context

Frequently Asked Questions

What is CVE-2026-41358?
CVE-2026-41358 is a security vulnerability in OpenClaw involving Slack thread context could include messages from non-allowlisted senders under CWE-346: Origin Validation Error.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.2 across affected packages: openclaw.
What version fixes CVE-2026-41358?
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-2026-41358?
CVE-2026-41358 has a CVSS v3.1 base score of 5.4 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-41358?
CVE-2026-41358 is classified under CWE-346: Origin Validation Error (The product does not properly verify that the source of data or communication is valid.).
How can I check npm dependencies for CVE-2026-41358?
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-qm77-8qjp-4vcm",
  "modified" : "2026-05-04T16:52:21Z",
  "published" : "2026-05-04T16:52:21Z",
  "aliases" : [ "CVE-2026-41358" ],
  "summary" : "OpenClaw: Slack thread context could include messages from non-allowlisted senders",
  "details" : "## Summary\n\nBefore OpenClaw 2026.4.2, Slack thread starter and thread-history context fetched through the API was not filtered by the effective sender allowlist. Messages from non-allowlisted senders could still enter the agent context when an allowlisted user replied in the same thread.\n\n## Impact\n\nA Slack deployment that relied on sender allowlists could still feed non-allowlisted thread content into the model context through thread history. This was a sender-access-control bypass on Slack thread context, not a direct channel-auth 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- `ac5bc4fb37becc64a2ec314864cca1565e921f2d` — filter Slack thread context by the effective allowlist\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\nOpenClaw thanks @AntAISecurityLab for reporting.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/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-qm77-8qjp-4vcm"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41358"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/ac5bc4fb37becc64a2ec314864cca1565e921f2d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-via-slack-thread-context"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-04T16:52:21Z",
    "nvd_published_at" : null
  }
}