anonhaven

CVE-2026-86590

MEDIUM CVSS 4.0: 6.3 EPSS 0.37%
Updated Sep 08, 2026
Kubernetes
Parameter Value
CVSS 6.3 (MEDIUM)
Affected Versions 7.79.0 — 7.121.0
Fixed In 7.122.0
Type CWE-918 (Server-Side Request Forgery (SSRF))
Vendor Kubernetes
Public PoC No

In Eclipse Che versions 7.79.0 through 7.121.0, the dashboard backend's POST /dashboard/api/data/resolver endpoint passes a caller-supplied URL directly to an outbound HTTP GET request with no host filtering. An authenticated user can exploit this server-side request forgery (SSRF) to read responses from internal network addresses, including the cloud instance metadata service (169.254.169.254), loopback interfaces, RFC-1918 private ranges, and in-cluster Kubernetes services. The operator-configured allowlist (spec.devEnvironments.allowedSources.urls) is not consulted.

The vulnerability is fixed in version 7.122.0, which adds private-address blocking, IPv4-mapped IPv6 bypass prevention, operator allowlist enforcement, and disables HTTP redirects on the outbound request.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Vulnerable Products

eclipse foundation:eclipse che

References 2

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/617
NVD
https://github.com/eclipse-che/che-dashboard/pull/1655
NVD
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