Vulnerability · Published Apr 27, 2026 · Assigned by VulnCheck

CVE-2026-41362OpenClaw 2026.2.19 through 2026.3.30 - Webhook Replay Dedupe Cache Event Suppression via Shared Authentication

Medium 4.3

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 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 80.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw versions 2026.2.19 before 2026.3.31 contain an improper cache isolation vulnerability in the Zalo webhook replay-dedupe mechanism that is shared across authenticated webhook targets. Attackers controlling one authenticated Zalo webhook path in multi-account deployments can suppress legitimate events on different accounts by matching event_name and message_id parameters.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.3.31	GHSA-fqrj-m88p-qf3v

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	2026.2.19 – before 2026.3.31

Weakness: CWE-668 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-fqrj-m88p-qf3v) vendor-advisory
Patch Commit patch
Patch Commit patch
VulnCheck Advisory: OpenClaw 2026.2.19 < 2026.3.31 - Webhook Replay Dedupe Cache Event Suppression via Shared Authentication third-party-advisory