CVE-2026-29609 Details
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.
A denial-of-service vulnerability has been identified in OpenClaw versions prior to 2026.2.14. The issue arises in the fetchWithGuard function, which allocates entire response payloads in memory using the arrayBuffer method, before applying maxBytes limits. This flaw allows remote attackers to cause memory exhaustion by sending oversized responses without content-length headers, leading to a loss of availability.
Users can update to OpenClaw version 2026.2.14 or later, and until then, disable URL-backed media inputs or restrict them to a tight hostname allowlist.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 9, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openclaw openclaw | < 2026.2.14 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 11, 2026 | Initial Analysis | [email protected] |
| Mar 9, 2026 | CVE Modified | CISA-ADP |
| Mar 5, 2026 | New CVE Received | [email protected] |