Vulnerability · Published Apr 23, 2026 · Assigned by VulnCheck
CVE-2026-41358OpenClaw < 2026.4.2 - Sender Allowlist Bypass via Slack Thread Context
Medium 5.4
In plain English
A medium-severity security flaw in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.1%top 96.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenClaw before 2026.4.2 fails to filter Slack thread context by sender allowlist, allowing non-allowlisted messages to enter agent context. Attackers can inject unauthorized thread messages through allowlisted user replies to bypass sender access controls and manipulate model context.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | openclaw | 2026.4.2 | GHSA-qm77-8qjp-4vcm |
Affected products (as reported)
Weakness: CWE-346 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-qm77-8qjp-4vcm) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.4.2 - Sender Allowlist Bypass via Slack Thread Context third-party-advisory