CVE-2026-29609

HIGH EPSS 34.2%
Published Mar 5, 20263mo ago · Modified Jun 17, 20261w ago
8.7 CVSS 4.0
High
Find Similar
Published Mar 5, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
34.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-770

Affected Products 1

VendorProductVersionRange
openclawopenclaw* <2026.2.14

References 3

  • github.com https://github.com/openclaw/openclaw/commit/00a08908892d1743d1fc52e5cbd9499dd5da2fe0
    Patch
  • github.com https://github.com/openclaw/openclaw/security/advisories/GHSA-j27p-hq53-9wgc
    Vendor Advisory
  • vulncheck.com https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-url-backed-media-fetch
    Third Party Advisory

Remediation

  • github.com https://github.com/openclaw/openclaw/commit/00a08908892d1743d1fc52e5cbd9499dd5da2fe0
    Patch