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CVE-2026-29609

7.5 · HIGH

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.

Published Mar 5, 2026CWE-770EPSS 0.79%

Overview

CVE-2026-29609 is a high-severity vulnerability. It was published on March 5, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/openclaw/openclaw/commit/00a08908892d1743d1fc52e5cbd9499dd5da2fe0GitHubgithub.com/openclaw/openclaw/security/advisories/GHSA-j27p-hq53-9wgcRefwww.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-url-backed-media-fetchGitHubgithub.com/openclaw/openclaw/security/advisories/GHSA-j27p-hq53-9wgc

How CyberStrike helps

Frequently asked questions

What is CVE-2026-29609?

CVE-2026-29609 is a high-severity vulnerability. It was published on March 5, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-29609?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-29609?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-29609?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-29609 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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