Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering
Priority MEDIUM 43CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0039 33rd percentileScored 2026-11-07
Fix Fixed Rancher (SUSE): 0.15.1, 0.14.5, 0.13.10 +2github.com/rancher/fleet (Go): 0.15.1, 0.14.5, 0.13.10 +2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 0.15.1; 0.14.0 to before 0.14.5; 0.13.0 to before 0.13.10; 0.12.0 to before 0.12.14; 0.11.0 to before 0.11.13 | 0.15.1, 0.14.5, 0.13.10, 0.12.14, 0.11.13 | Patch available | CNA |
| — | github.com/rancher/fleet (Go) | 0.15.0 to before 0.15.1 | 0.15.1 | Patch available | GHSA-765j-qfrp-hm3j |
| — | github.com/rancher/fleet (Go) | 0.14.0 to before 0.14.5 | 0.14.5 | Patch available | GHSA-765j-qfrp-hm3j |
| — | github.com/rancher/fleet (Go) | 0.13.0 to before 0.13.10 | 0.13.10 | Patch available | GHSA-765j-qfrp-hm3j |
| — | github.com/rancher/fleet (Go) | 0.12.0 to before 0.12.14 | 0.12.14 | Patch available | GHSA-765j-qfrp-hm3j |
| — | github.com/rancher/fleet (Go) | 0.11.0 to before 0.11.13 | 0.11.13 | Patch available | GHSA-765j-qfrp-hm3j |
- Rancher VendorSUSE Affected 0.15.0 to before 0.15.1; 0.14.0 to before 0.14.5; 0.13.0 to before 0.13.10; 0.12.0 to before 0.12.14; 0.11.0 to before 0.11.13 Fixed in 0.15.1, 0.14.5, 0.13.10, 0.12.14, 0.11.13 Patch available CNA
- github.com/rancher/fleet (Go) Vendor— Affected 0.15.0 to before 0.15.1 Fixed in 0.15.1 Patch available GHSA-765j-qfrp-hm3j
- github.com/rancher/fleet (Go) Vendor— Affected 0.14.0 to before 0.14.5 Fixed in 0.14.5 Patch available GHSA-765j-qfrp-hm3j
- github.com/rancher/fleet (Go) Vendor— Affected 0.13.0 to before 0.13.10 Fixed in 0.13.10 Patch available GHSA-765j-qfrp-hm3j
- github.com/rancher/fleet (Go) Vendor— Affected 0.12.0 to before 0.12.14 Fixed in 0.12.14 Patch available GHSA-765j-qfrp-hm3j
- github.com/rancher/fleet (Go) Vendor— Affected 0.11.0 to before 0.11.13 Fixed in 0.11.13 Patch available GHSA-765j-qfrp-hm3j
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:* | 0.11.0 to before 0.11.13; 0.12.0 to before 0.12.14; 0.13.0 to before 0.13.10; 0.14.0 to before 0.14.5; 0.15.0 to before 0.15.1 | Vulnerable | SUSE |
- cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:* Versions 0.11.0 to before 0.11.13; 0.12.0 to before 0.12.14; 0.13.0 to before 0.13.10; 0.14.0 to before 0.14.5; 0.15.0 to before 0.15.1 Vulnerable ·SUSE
Remediation
- Fix · CNA Rancher (SUSE) Fixed in 0.15.1, 0.14.5, 0.13.10, 0.12.14, 0.11.13
- Fix · GHSA-765j-qfrp-hm3j github.com/rancher/fleet (Go) Fixed in 0.15.1 Advisory →
- Fix · GHSA-765j-qfrp-hm3j github.com/rancher/fleet (Go) Fixed in 0.14.5 Advisory →
- Fix · GHSA-765j-qfrp-hm3j github.com/rancher/fleet (Go) Fixed in 0.13.10 Advisory →
- Fix · GHSA-765j-qfrp-hm3j github.com/rancher/fleet (Go) Fixed in 0.12.14 Advisory →
- Fix · GHSA-765j-qfrp-hm3j github.com/rancher/fleet (Go) Fixed in 0.11.13 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41050
- 2026-10-03 Alias added: GHSA-765j-qfrp-hm3j
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-2026-60216 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-2026-32803 SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components CVSS 4.0HIGH 8.3
- 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-2026-41050 · CVE Program
- CVE-2026-41050 · NVD
- FIRST EPSS
- GHSA-765j-qfrp-hm3j · GitHub Advisory Database · CC BY 4.0
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