CVE-2026-93539

Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook Receiver

Published Sep 28, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Suse rancher Fleet
CPEs cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*
Vendors & Products Suse rancher Fleet
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description 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.
Title Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook Receiver
First Time appeared Suse
Suse rancher
Weaknesses CWE-306
CPEs cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*
Vendors & Products Suse
Suse rancher
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
suse
Published
Updated
Sep 28, 2026, 4:22 PM
Reserved
Sep 18, 2026, 9:08 AM
Status
Analyzed
Published
Sep 28, 2026, 3:17 PM
Modified
Oct 7, 2026, 5:08 PM