Description
A vulnerability has been identified within Rancher Manager whereby `Impersonate-Extra-*` headers are being sent to an external entity, for example `amazonaws.com`, via the `/meta/proxy` Rancher endpoint. These headers may contain identifiable and/or sensitive information e.g. email addresses.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SUSE | rancher | 2.12.0 – < 2.12.2, 2.11.0 – < 2.11.6, 2.10.0 – < 2.10.10, 2.9.0 – < 2.9.12 | 2.12.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | govulncheck-vulndb | 0.0.20251023T162509-150000.1.110.1 | SUSE-SU-2025:3799-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20251023T162509-1.1 | openSUSE-SU-2025:15666-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20251023T162509-150000.1.110.1 | SUSE-SU-2025:3799-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/rancher/rancher | >= 2.12.0, < 2.12.2 | 2.12.2 | GHSA-mjcp-rj3c-36fr |
| Go | github.com/rancher/rancher | >= 2.11.0, < 2.11.6 | 2.11.6 | GHSA-mjcp-rj3c-36fr |
| Go | github.com/rancher/rancher | >= 2.10.0, < 2.10.10 | 2.10.10 | GHSA-mjcp-rj3c-36fr |
| Go | github.com/rancher/rancher | >= 2.9.0, < 2.9.12 | 2.9.12 | GHSA-mjcp-rj3c-36fr |
| Go | github.com/rancher/rancher | all versions | — | GO-2025-3982 |
Advisories 4
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- openSUSE-SU-2025:15666-1 govulncheck-vulndb-0.0.20251023T162509-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:3799-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-2141 Rancher: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2025