Vulnerability · Published Mar 5, 2026 · Assigned by VulnCheck

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

High 7.5

In plain English

A high-severity resource allocation without limits 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 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 58.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.2.14	GHSA-j27p-hq53-9wgc

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.2.14

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-j27p-hq53-9wgc) vendor-advisory
Patch Commit patch
VulnCheck Advisory: OpenClaw < 2026.2.14 - Denial of Service via Unbounded URL-backed Media Fetch third-party-advisory