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.

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History

Tue, 16 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw < 2026.5.26 - Hostname Validation Bypass via Trailing-Dot Inconsistency
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-1023
CWE-918
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-16T18:38:58.295Z

Reserved: 2026-06-10T21:22:34.480Z

Link: CVE-2026-53859

cve-icon Vulnrichment

Updated: 2026-06-16T18:38:53.492Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-16T19:17:03.440

Modified: 2026-06-16T20:42:46.200

Link: CVE-2026-53859

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-16T19:45:03Z

Weaknesses