Skip to content
Fencer Vulns
critical 9.9

CVE-2021-36783 json

Rancher: Failure to properly sanitize credentials in cluster template answers

published 2022-09-07 4 y ago modified 2026-07-08 4 mo ago also GHSA-8w87-58w6-hfv8 , EUVD-2021-23366

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

A Insufficiently Protected Credentials vulnerability in SUSE Rancher allows authenticated Cluster Owners, Cluster Members, Project Owners and Project Members to read credentials, passwords and API tokens that have been stored in cleartext and exposed via API endpoints. This issue affects: SUSE Rancher Rancher versions prior to 2.6.4; Rancher versions prior to 2.5.13.

Patch / fix

  • go github.com/rancher/rancher 2.5.13, 2.6.4
  • SUSE Rancher 2.5.13, 2.6.4

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

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, <2.5.13
>=2.6.0, <2.6.4
2.5.13
2.6.4

Affected products

  • SUSE Rancher

Classification

Weakness
  • CWE-522 Insufficiently Protected Credentials
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-312 Cleartext Storage of Sensitive Information

References

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.