---
id: CVE-2026-93539
title: >-
  A vulnerability was discovered in Fleet's Git webhook receiver (the gitjob
  webhook service)
summary: >-
  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 sp…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-306
vendor: suse
product: rancher_fleet
affected:
  - 'rancher_fleet >= 0.16.0, < 0.16.2'
patched:
  - rancher_fleet 0.16.2
published: '2026-09-28'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T17:08:05.577'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93539'
references:
  - url: 'https://github.com/rancher/fleet/security/advisories/GHSA-8vfv-33cg-g75q'
    label: meissner@suse.de
tags:
  - nvd
  - cve.org
epss: 0.00233
epssPercentile: 0.1415
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-28T14:59:38.674475Z'
ingestedAt: '2026-09-28T15:13:31.605Z'
---

## Overview

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.

## Affected

- `rancher_fleet >= 0.16.0, < 0.16.2`

## Remediation

Upgrade past the affected range:

- `rancher_fleet 0.16.2`