CVE-2026-29609 HIGH

CVE-2026-29609: OpenClaw < 2026.2.14 - Denial of Service via Unbounded URL-backed Media Fetch

Vendor Openclaw
Product OpenClaw
Weakness CWE-770 · Uncontrolled resource consumption
Published March 5, 2026
Last update March 9, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

OpenClaw versions prior to 2026.2.14 contain a denial of service vulnerability in the fetchWithGuard function that allocates entire response payloads in memory before enforcing maxBytes limits. Remote attackers can trigger memory exhaustion by serving oversized responses without content-length headers to cause availability loss.

Key dates

02Disclosure timeline

March 5, 2026 CVE published
March 9, 2026 Record updated