CVE-2026-28394: Openclaw

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Openclaw Openclaw: before 2026.2.15 (fixed in 2026.2.15)

Published 2026-03-05. Last modified 2026-06-17.