CVE-2026-42420
Published:April 28, 2026
Updated:May 18, 2026
OpenClaw before 2026.4.8 contains improper input validation in base64 decode paths that allocate memory before enforcing decoded-size limits. Attackers can exploit multiple code paths to cause memory exhaustion or denial of service through crafted base64-encoded input.
Affected Packages
https://github.com/openclaw/openclaw.git (GITHUB):
Affected version(s) >=v0.1.0 <v2026.4.8Fix Suggestion:
Update to version v2026.4.8openclaw (NPM):
Affected version(s) >=0.0.1 <2026.4.8Fix Suggestion:
Update to version 2026.4.8openclaw (NPM):
Affected version(s) >=0.0.1 <2026.4.8Fix Suggestion:
Update to version 2026.4.8Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.04