CVE-2026-29609
OpenClaw < 2026.2.14 - Denial of Service via Unbounded URL-backed Media Fetch
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Mar 5, 2026 |
| Last Updated | Mar 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
OpenClaw / OpenClaw
0 < 2026.2.14
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-j27p-hq53-9wgc github.com: https://github.com/openclaw/openclaw/commit/00a08908892d1743d1fc52e5cbd9499dd5da2fe0 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-url-backed-media-fetch
Credits
🔍 Vincent Koc (@vincentkoc)