Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object

published 2022-09-07 4 y ago modified 2026-07-08 4 mo ago also GHSA-g7j7-h4q8-8w2f , EUVD-2022-6818

cvss: 9.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 4.2%; EPSS 4.2% chance of exploitation in 30 days, percentile 90%
public exploits: 1; Metasploit

A Cleartext Storage of Sensitive Information vulnerability in SUSE Rancher allows authenticated Cluster Owners, Cluster Members, Project Owners, Project Members and User Base to use the Kubernetes API to retrieve plaintext version of sensitive data. This issue affects: SUSE Rancher Rancher versions prior to 2.5.16; Rancher versions prior to 2.6.7.

Patch / fix

fixed in 2

go github.com/rancher/rancher 2.5.16, 2.6.7
SUSE Rancher 2.5.16, 2.6.7

Timeline

2022-08-18 First public exploit (Metasploit auxiliary/gather/rancher_authenticated_api_cred_exposure)
2022-09-07 Published

Exploit prediction

4.17% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit auxiliary/gather/rancher_authenticated_api_cred_exposure Rancher Authenticated API Credential Exposure metasploit auxiliary, normal rank, 2022-08-18
bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1193988 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/rancher/rancher/security/advisories/GHSA-g7j7-h4q8-8w2f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
go	github.com/rancher/rancher	>=2.5.0, <2.5.16 >=2.6.0, <2.6.7	2.5.16 2.6.7

Affected products

SUSE Rancher

Classification

Weakness

CWE-312 Cleartext Storage of Sensitive Information

References

bugzilla.suse.com /show_bug.cgi?id=1193988
web, exploit, issue-tracking, mitigation, vendor-advisory
github.com /rancher/rancher/security/advisories/GHSA-g7j7-h4q8-8w2f
web, exploit, mitigation, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-36782
advisory
github.com /rancher/rancher
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary