Vulnerability · Published Jul 15, 2021 · Assigned by suse

CVE-2021-25320Rancher: Cloud credentials can be used through proxy API by users without access

Critical 9.9

In plain English

A critical-severity improper access control in Rancher from Rancher. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.9%top 41.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A Improper Access Control vulnerability in Rancher, allows users in the cluster to make request to cloud providers by creating requests with the cloud-credential ID. Rancher in this case would attach the requested credentials without further checks This issue affects: Rancher versions prior to 2.5.9; Rancher versions prior to 2.4.16.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/rancher/rancher	2.4.16	GHSA-gqf8-rvrh-g7w6
Go	github.com/rancher/rancher	2.5.9	GHSA-gqf8-rvrh-g7w6
Go	github.com/rancher/rancher	no fix listed	GO-2026-4589

Affected products (as reported)

Vendor	Product	Versions
Rancher	Rancher	Rancher – before 2.5.9
Rancher	Rancher	Rancher – before 2.4.16

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://bugzilla.suse.com/show_bug.cgi?id=1185514 x_refsource_CONFIRM