Vulnerability DatabaseCVE-2026-53859
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CVE-2026-53859
Published:June 16, 2026
Updated:June 29, 2026
OpenClaw before 2026.5.26 contains a hostname validation vulnerability allowing attackers to bypass blocklist comparisons using trailing-dot notation in model or workspace-derived URLs. Attackers can exploit inconsistent hostname checks to reach destinations that operators intended to block through hostname policies.
Affected Packages
openclaw (NPM):
Affected version(s) >=0.0.1 <2026.5.26
Fix Suggestion:
Update to version 2026.5.26
openclaw (NPM):
Affected version(s) >=0.0.1 <2026.5.26
Fix Suggestion:
Update to version 2026.5.26
Related Resources (4)
https://nvd.nist.gov/vuln/detail/CVE-2026-53859
https://github.com/openclaw/openclaw
https://www.vulncheck.com/advisories/openclaw-hostname-validation-bypass-via-trailing-dot-inconsistency
https://github.com/openclaw/openclaw/security/advisories/GHSA-gxg4-2rrr-jhc7
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CVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Input Validation
CWE-20
Server-Side Request Forgery (SSRF)
CWE-918
Incomplete Comparison with Missing Factors
CWE-1023
EPSS
Base Score:
0.21