CVE-2026-53859

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/openclaw/openclaw/security/advisories/GHSA-gxg4-2rrr-jhc7
https://www.vulncheck.com/advisories/openclaw-hostname-validation-bypass-via-trailing-dot-inconsistency

Configurations

No configuration.

History

16 Jun 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-16 19:17

Updated : 2026-06-16 20:42

NVD link : CVE-2026-53859

Mitre link : CVE-2026-53859

CVE.ORG link : CVE-2026-53859

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

CWE-1023

Incomplete Comparison with Missing Factors

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