# CVE-2026-88811: Rancher credentials disclosed to third-party hosts by the Rancher Manager meta proxy

Status: published. Published: 2026-11-02. Updated: 2026-11-03.

Missing filtering in the SUSE Rancher Manager meta proxy could cause passed in rancher credentials to be leaked to cloud providers. This affects SUSE Rancher 2.15.0 up to 2.15.3, 2.14.0 up to 2.14.7, 2.13.0 up to 2.13.11,

## Remediation

- fix: github.com/rancher/rancher (go): GitHub reports patched versions 2.15.3. Check the advisory for the affected release branch. (source: GitHub GHSA-x82x-2qj6-5rm2) — https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2
- fix: github.com/rancher/rancher (go): GitHub reports patched versions 2.14.7. Check the advisory for the affected release branch. (source: GitHub GHSA-x82x-2qj6-5rm2) — https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2
- fix: github.com/rancher/rancher (go): GitHub reports patched versions 2.13.11. Check the advisory for the affected release branch. (source: GitHub GHSA-x82x-2qj6-5rm2) — https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2
- fix: github.com/rancher/rancher (go): GitHub reports patched versions 2.12.15. Check the advisory for the affected release branch. (source: GitHub GHSA-x82x-2qj6-5rm2) — https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2
- fix: github.com/rancher/rancher (go): GitHub reports patched versions 2.11.19. Check the advisory for the affected release branch. (source: GitHub GHSA-x82x-2qj6-5rm2) — https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2

## Affected products and versions

- SUSE / Rancher (Rancher): ≥ 2.15.0; < 2.15.3 (affected, semver); ≥ 2.14.0; < 2.14.7 (affected, semver); ≥ 2.13.0; < 2.13.11 (affected, semver); ≥ 2.12.0; < 2.12.15 (affected, semver); ≥ 2.11.0; < 2.11.19 (affected, semver). Source: CNA: suse
-  / github.com/rancher/rancher (github.com/rancher/rancher): >=2.15.0, <2.15.3 (affected, GitHub advisory range). Source: GitHub GHSA-x82x-2qj6-5rm2
-  / github.com/rancher/rancher (github.com/rancher/rancher): >=2.14.0, <2.14.7 (affected, GitHub advisory range). Source: GitHub GHSA-x82x-2qj6-5rm2
-  / github.com/rancher/rancher (github.com/rancher/rancher): >=2.13.0, <2.13.11 (affected, GitHub advisory range). Source: GitHub GHSA-x82x-2qj6-5rm2
-  / github.com/rancher/rancher (github.com/rancher/rancher): >=2.12.0, <2.12.15 (affected, GitHub advisory range). Source: GitHub GHSA-x82x-2qj6-5rm2
-  / github.com/rancher/rancher (github.com/rancher/rancher): >=2.11.0, <2.11.19 (affected, GitHub advisory range). Source: GitHub GHSA-x82x-2qj6-5rm2

## Severity and prioritization

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N; source: CNA: suse

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N; source: NVD: meissner@suse.de

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-201

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2 (CNA: suse; vendor-advisory)

- https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2 (meissner@suse.de)

- https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2 (GitHub Security Advisories; advisory)

## Provenance

- CNA: suse: https://www.cve.org/CVERecord?id=CVE-2026-88811; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88811; retrieved 2026-11-03; source updated 2026-11-03

- GitHub Security Advisories: https://github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2; retrieved 2026-11-02; source updated 2026-10-29

Revision: 2ba700a34aa648972c5b01b567029a054f23559ed607429d1d00446c1fd01ff9

Canonical: https://y2.dev/cve/CVE-2026-88811

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