CVE-2026-28394

Medium

Description

OpenClaw versions prior to 2026.2.15 contain a denial of service vulnerability in the web_fetch tool that allows attackers to crash the Gateway process through memory exhaustion by parsing oversized or deeply nested HTML responses. Remote attackers can social-engineer users into fetching malicious URLs with pathological HTML structures to exhaust server memory and cause service unavailability.

SeverityMedium

CVSS6.5

Exploit probability—

ProductOpenclaw

PublishedMar 5, 2026

First seenMar 5, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

openclaw openclaw2026.2.15 or later
openclaw2026.2.15 or later

Patches

github.com/openclaw/openclaw/commit/166cf6a3e04c7df42bea70a7ad5ce2b9df46d147

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-p536-vvpp-9mc8

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.2.15	2026.2.15
openclawnpm	v < 2026.2.15	2026.2.15

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