CVE-2026-53859

MEDIUM

CVSS v3.1: 6.5

NetworkNo user interactionSSRFVendor advisory ref

Source data as of:

At a glance

Severity
MEDIUM
CVSS
6.5 v3.1 · NVD
EPSS
EPSS not provided by FIRST.org for this CVE
CISA KEV
No
Type
SSRF · NVD CWE
Attack conditions (CVSS vector)
NetworkNo user interaction · Source: NVD Vector
Published
2026-06-16 · Modified: 2026-06-16
References
Jump to references (2)

CVSS / EPSS / KEV

CVSS v3.1 6.5 / 10 MEDIUM Source: NVD
CVSS v4.0 6.0 / 10 MEDIUM Source: NVD
EPSS — EPSS not provided by FIRST.org for this CVE Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

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.

Record details

CVE ID
CVE-2026-53859
CVSS (v3.1)
6.5 (MEDIUM)
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability subscore
2.8
Impact subscore
3.6
CISA KEV
No
Weakness (CWE)
CWE-918, CWE-1023
Affected configurations (CPE)
0
Published
2026-06-16
Modified
2026-06-16
Status
Awaiting Analysis

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-50887 CRITICAL CVSS 9.1 CVE-2026-50888 HIGH CVSS 8.1 CVE-2026-47684 HIGH CVSS 7.7 CVE-2026-3341 MEDIUM CVSS 5.4

Published the same year

CVE-2026-20127 CRITICAL CVSS 10.0 KEV CVE-2026-20182 CRITICAL CVSS 10.0 KEV CVE-2026-48907 CRITICAL CVSS 10.0 KEV CVE-2026-40750 CRITICAL CVSS 9.9
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