SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components
Priority LOW 36CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-345.
Summary
Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00424 36th percentileScored 2026-11-07
Fix Fixed Rancher (SUSE): 0.15.2, 0.14.6, 0.13.11 +1github.com/rancher/fleet (Go): 0.15.2, 0.14.6, 0.13.11 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SUSE | Rancher | 0.15.0 to before 0.15.2; 0.14.0 to before 0.14.6; 0.13.0 to before 0.13.11; 0.12.0 to before 0.12.15 | 0.15.2, 0.14.6, 0.13.11, 0.12.15 | Patch available | CNA |
| — | github.com/rancher/fleet (Go) | 0.15.0 to before 0.15.2 | 0.15.2 | Patch available | GHSA-jmf4-m7j9-g72r |
| — | github.com/rancher/fleet (Go) | 0.14.0 to before 0.14.6 | 0.14.6 | Patch available | GHSA-jmf4-m7j9-g72r |
| — | github.com/rancher/fleet (Go) | 0.13.0 to before 0.13.11 | 0.13.11 | Patch available | GHSA-jmf4-m7j9-g72r |
| — | github.com/rancher/fleet (Go) | 0.12.0 to before 0.12.15 | 0.12.15 | Patch available | GHSA-jmf4-m7j9-g72r |
- Rancher VendorSUSE Affected 0.15.0 to before 0.15.2; 0.14.0 to before 0.14.6; 0.13.0 to before 0.13.11; 0.12.0 to before 0.12.15 Fixed in 0.15.2, 0.14.6, 0.13.11, 0.12.15 Patch available CNA
- github.com/rancher/fleet (Go) Vendor— Affected 0.15.0 to before 0.15.2 Fixed in 0.15.2 Patch available GHSA-jmf4-m7j9-g72r
- github.com/rancher/fleet (Go) Vendor— Affected 0.14.0 to before 0.14.6 Fixed in 0.14.6 Patch available GHSA-jmf4-m7j9-g72r
- github.com/rancher/fleet (Go) Vendor— Affected 0.13.0 to before 0.13.11 Fixed in 0.13.11 Patch available GHSA-jmf4-m7j9-g72r
- github.com/rancher/fleet (Go) Vendor— Affected 0.12.0 to before 0.12.15 Fixed in 0.12.15 Patch available GHSA-jmf4-m7j9-g72r
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:* | 0.12.0 to before 0.12.15; 0.13.0 to before 0.13.11; 0.14.0 to before 0.14.6; 0.15.0 to before 0.15.2 | Vulnerable | SUSE |
- cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:* Versions 0.12.0 to before 0.12.15; 0.13.0 to before 0.13.11; 0.14.0 to before 0.14.6; 0.15.0 to before 0.15.2 Vulnerable ·SUSE
Remediation
- Fix · CNA Rancher (SUSE) Fixed in 0.15.2, 0.14.6, 0.13.11, 0.12.15
- Fix · GHSA-jmf4-m7j9-g72r github.com/rancher/fleet (Go) Fixed in 0.15.2 Advisory →
- Fix · GHSA-jmf4-m7j9-g72r github.com/rancher/fleet (Go) Fixed in 0.14.6 Advisory →
- Fix · GHSA-jmf4-m7j9-g72r github.com/rancher/fleet (Go) Fixed in 0.13.11 Advisory →
- Fix · GHSA-jmf4-m7j9-g72r github.com/rancher/fleet (Go) Fixed in 0.12.15 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
SUSE Rancher 0.12.15, 0.13.11 and 2 more versions
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-32802 Rancher Fleet SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yamlPriority LOW 23
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44937
- 2026-10-03 Alias added: GHSA-jmf4-m7j9-g72r
References
More SUSE Rancher Fleet vulnerabilities
- TI-2026-32801 Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer CVSS 3.1CRITICAL 9.9
- TI-2026-29689 Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering CVSS 3.1CRITICAL 9.9
- TI-2026-60216 Fleet agent copies downstream resources with cluster-admin privileges, allowing… CVSS 3.1HIGH 8.8
- TI-2026-32804 Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent CVSS 3.1HIGH 8.8
- TI-2026-63018 Authentication bypass by spoofing in SUSE Rancher CVSS 3.1HIGH 7.1
- TI-2026-63017 Path traversal in Fleet Helm valuesFiles allows disclosure of files outside the bundle directory CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-44937 · CVE Program
- CVE-2026-44937 · NVD
- FIRST EPSS
- GHSA-jmf4-m7j9-g72r · GitHub Advisory Database · CC BY 4.0
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