CVE-2026-27488 OpenClaw hardened cron webhook delivery against SSRF

Medium 6.9 Published 21 Feb 2026 Updated 24 Feb 2026

Attackers can exploit unvalidated cron webhook targets to access internal or metadata endpoints, bypassing SSRF protections in OpenClaw.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-27488?

CVE-2026-27488 is a medium-severity server-side request forgery vulnerability in Openclaw Openclaw, published on 21 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, Cron webhook delivery in src/gateway/server-cron.ts uses fetch() directly, so webhook targets can reach private/metadata/internal endpoints without SSRF policy checks. This issue was fixed in version 2026.2.19.

Weakness: CWE-918

Which versions are affected by CVE-2026-27488?

2 open source packages ship an affected version, including openclaw. It affects 1 product.

Package	Affected	Fixed in
`openclaw` npm	All versions	`2026.2.19`
`openclaw` npm	All versions	`2026.2.19`

Products include Openclaw Openclaw.

How do I fix CVE-2026-27488?

Upgrade openclaw to 2026.2.19 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-27488 being exploited?

There is no known exploitation of CVE-2026-27488 in the wild and no public exploit code.

All Openclaw Openclaw vulnerabilities

Sources

Also known as GHSA-w45g-5746-x9fp, MINI-w6g9-cv62-chcv.