Rancher exposes sensitive information through audit logs

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

A vulnerability has been identified in Rancher Manager, where sensitive information, including secret data, cluster import URLs, and registration tokens, is exposed to any entity with access to Rancher audit logs.

Source published

29 Oct 2025 14:58:06 UTC

Source modified

29 Oct 2025 15:10:05 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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CVSS 3.1 · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

A vulnerability has been identified in Rancher Manager, where sensitive information, including secret data, cluster import URLs, and registration tokens, is exposed to any entity with access to Rancher audit logs.

Source published

Oct 29, 2025, 2:58:06 PM (timezone not stated)

Source modified

Oct 29, 2025, 3:10:05 PM (timezone not stated)

Observed here

11 Nov 2026 01:39:20 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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EUVD CVSS 3.1 · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

A vulnerability has been identified in Rancher Manager, where sensitive information, including secret data, cluster import URLs, and registration tokens, is exposed to any entity with access to Rancher audit logs.

Source published

29 Oct 2025 15:15:41 UTC

Source modified

2 Oct 2026 00:10:00 UTC

Observed here

25 Oct 2026 01:17:17 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

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CVSS 3.1 · [email protected] · Secondary · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

### Impact **Note: The exploitation of this issue requires that the malicious user have access to Rancher’s audit log storage.** A vulnerability has been identified in Rancher Manager, where sensitive information, including secret data, cluster import URLs, and registration tokens, is exposed to any entity with access to Rancher audit logs. This happens in two different ways: 1. Secret Annotation Leakage: When creating Kubernetes Secrets using the `stringData` field, the cleartext value is embedded in the `kubectl.kubernetes.io/last-applied-configuration` annotation. This annotation is included in Rancher audit logs within both the request and response bodies, exposing secret material that should be redacted. 2. Cluster Registration Token Leakage: During the import or creation of downstream clusters (Custom, Imported, or Harvester), Rancher audit logs record full cluster registration manifests and tokens, including: a. Non-expiring import URLs such as `/v3/import/<token>_c-m-xxxx.yaml`. b. Full `kubectl apply` and `curl` commands containing registration tokens and CA checksums. c. Token values associated with cluster registration resources (`clusterRegistrationToken`). d. These tokens are valid until explicitly revoked and can be used to re-register nodes, granting unauthorized cluster access. An attacker or internal user who gains access to these logs could: - Recover plaintext secret values from annotations. - Use cluster registration tokens or import URLs to re-enroll agents or compromise downstream clusters. - Access clusters that rely on these tokens for authentication, enabling lateral movement. Please consult the associated [MITRE ATT&CK - Technique - Log Enumeration](https://attack.mitre.org/techniques/T1654/) for further information about this category of attack. ### Patches This vulnerability is addressed by applying redaction to sensitive information that was leaking. Patched versions of Rancher include release `v2.12.3`. ### Workarounds If the deployment can't be upgraded to a fixed version, users are encouraged to create `AuditPolicies` to redact and filter some of those requests as described in our [documentation](https://ranchermanager.docs.rancher.com/how-to-guides/advanced-user-guides/enable-api-audit-log#audit-log-policies). The following AuditPolicy can be applied to redact the secrets: ```yaml apiVersion: auditlog.cattle.io/v1 kind: AuditPolicy metadata: name: redactions spec: enabled: true additionalRedactions: - headers: - "Referer" - paths: - "$..metadata.annotations['kubectl.kubernetes.io/last-applied-configuration']" ``` Also consider granting access to Rancher's logs only for trusted users. ### References If you have any questions or comments about this advisory: - Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries. - Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository. - Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).

Source published

24 Oct 2025 15:27:13 UTC

Source modified

5 Nov 2025 19:57:14 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Publisher rating · MODERATE

Rancher exposes sensitive information through audit logs in github.com/rancher/rancher

Source published

30 Oct 2025 15:02:33 UTC

Source modified

3 Mar 2026 04:57:05 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

OSV · upstream source license applies

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.