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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-j27p-hq53-9wgc OpenClaw affected by denial of service via unbounded URL-backed media fetch
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 09 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 05 Mar 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw < 2026.2.14 - Denial of Service via Unbounded URL-backed Media Fetch
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-770
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-09T20:37:30.422Z

Reserved: 2026-03-04T16:16:15.967Z

Link: CVE-2026-29609

cve-icon Vulnrichment

Updated: 2026-03-09T20:37:18.381Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-05T22:16:24.043

Modified: 2026-03-11T01:03:36.773

Link: CVE-2026-29609

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-06T14:56:49Z

Weaknesses