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MEDIUM severity

CVE-2025-54468 — rancher

MEDIUM

CVE-2025-54468 is a medium-severity (CVSS 4.7) Information Exposure vulnerability in github.com/rancher/rancher. A fix is available for github.com/rancher/rancher — see the affected versions and patch details below.

Rancher sends sensitive information to external services through the `/meta/proxy` endpoint

Also known asGHSA-mjcp-rj3c-36frGO-2025-3982
Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-54468.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs30th percentile — riskier than 30% of all scored CVEsHighest risk
0.00%0.29%0.57%0.86%0.0%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

4 pkgs affected
🐹github.com/rancher/rancher🐹github.com/rancher/rancher🐹github.com/rancher/rancher🐹github.com/rancher/rancher

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Impact

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.

If the authentication provider is configured to have email or other sensitive and/or identifiable information as part of the username and principal ID then when a new cloud credential is being created in Rancher Manager this information is sent to an external entity such as amazonaws.com, in case of an AWS cloud credentials, in Impersonate-Extra-Username and/or Impersonate-Extra-Principalid headers. Please note that neither password, password hashes or Rancher’s related authentication tokens are leaked in those requests.

The entities to which such information is sent to are limited by the whitelisted domains specified in nodedrivers.management.cattle.io objects.

For example, the Amazon EC2 node driver contains the following whitelisted domains:

  • iam.amazonaws.com
  • iam.us-gov.amazonaws.com
  • iam.%.amazonaws.com.cn
  • iam.global.api.aws
  • ec2.%.amazonaws.com
  • ec2.%.amazonaws.com.cn
  • ec2.%.api.aws
  • eks.%.amazonaws.com
  • eks.%.amazonaws.com.cn
  • eks.%.api.aws
  • kms.%.amazonaws.com
  • kms.%.amazonaws.com.cn
  • kms.%.api.aws

While the DigitalOcean driver contains the following whitelisted domain:

  • api.digitalocean.com

Patches

This vulnerability is addressed by filtering all Impersonate-* headers from the original request by the /meta/proxy endpoint.

Patched versions of Rancher include releases v2.12.2, v2.11.6, v2.10.10, and v2.9.12.

Workarounds

There are no known workarounds for this issue.

References

If you have any questions or comments about this advisory:

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/rancher/rancher≥ 2.12.0&&< 2.12.22.12.2go get github.com/rancher/rancher@v2.12.2
🐹Gogithub.com/rancher/rancher≥ 2.11.0&&< 2.11.62.11.6go get github.com/rancher/rancher@v2.11.6
🐹Gogithub.com/rancher/rancher≥ 2.10.0&&< 2.10.102.10.10go get github.com/rancher/rancher@v2.10.10
🐹Gogithub.com/rancher/rancher≥ 2.9.0&&< 2.9.122.9.12go get github.com/rancher/rancher@v2.9.12

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/rancher/rancher, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/rancher/rancher to 2.12.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-54468 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

### Impact 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. If the authentication provider is configured to have email or other sensitive and/or identifiable information as part of the username and principal ID then when a new cloud credential is being created in Rancher Manager this information is sent to an external entity such as `amazonaws.com`, i
O3 Security · Impact-Aware SCA

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CVE-2025-54468: rancher — Fixed in 2.12.2