CVE-2026-93539

A vulnerability was discovered in Fleet's Git webhook receiver (the gitjob webhook service). When a webhook secret is not configured, incoming webhook requests are accepted without verification, and processing a request can change the spec.pollingInterval field of a matching GitRepo resource in any namespace. A caller with network access to the webhook service and no Kubernetes credentials can therefore alter GitRepo configuration outside the namespaces they are authorized for. This only affects SUSE Rancher Fleet 0.16 before 0.16.2, older versions are not affected.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/rancher/fleet/security/advisories/GHSA-8vfv-33cg-g75q	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*

History

07 Oct 2026, 17:08

Type	Values Removed	Values Added
First Time		Suse Suse rancher Fleet
CPE		cpe:2.3:a:suse:rancher_fleet::::::::
References	~~() https://github.com/rancher/fleet/security/advisories/GHSA-8vfv-33cg-g75q -~~	() https://github.com/rancher/fleet/security/advisories/GHSA-8vfv-33cg-g75q - Vendor Advisory

28 Sep 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 15:17

Updated : 2026-10-07 17:08

NVD link : CVE-2026-93539

Mitre link : CVE-2026-93539

CVE.ORG link : CVE-2026-93539

JSON object : View

Products Affected

suse

rancher_fleet

CWE

CWE-306

Missing Authentication for Critical Function

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