CVE-2026-53859

MEDIUM EPSS 11.2%
Published Jun 16, 20261w ago · Modified Jun 17, 20261w ago
6.0 CVSS 4.0
Medium
Find Similar
Published Jun 16, 2026 1w ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
6.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/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 Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
11.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-1023
CWE-918 Server-Side Request Forgery (SSRF) Validation

Affected Products 3

VendorProductVersionRange
openclawopenclaw* <2026.5.26
openclawopenclaw2026.5.26any
openclawopenclaw2026.5.26any

References 2

  • github.com https://github.com/openclaw/openclaw/security/advisories/GHSA-gxg4-2rrr-jhc7
    Vendor AdvisoryMitigation
  • vulncheck.com https://www.vulncheck.com/advisories/openclaw-hostname-validation-bypass-via-trailing-dot-inconsistency
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.