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Fencer Vulns
medium 6.8

CVE-2022-21951 json

Rancher: Weave CNI password is not set if RKE template is used with CNI value overridden

published 2022-05-25 4 y ago modified 2026-07-08 4 mo ago also GHSA-vrph-m5jj-c46c , EUVD-2022-27107

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

A Cleartext Transmission of Sensitive Information vulnerability in SUSE Rancher, Rancher allows attackers on the network to read and change network data due to missing encryption of data transmitted via the network when a cluster is created from an RKE template with the CNI value overridden This issue affects: SUSE Rancher Rancher versions prior to 2.5.14; Rancher versions prior to 2.6.5.

Patch / fix

  • go github.com/rancher/rancher 2.5.14, 2.6.5
  • SUSE Rancher 2.5.14, 2.6.5

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/rancher/rancher/security/advisories/GHSA-vrph-m5jj-c46c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 3.6 AV:N/AC:H/Au:S/C:P/I:P/A:N
GitHub 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/rancher/rancher
>=2.6.0, <2.6.5
>=2.5.0, <2.5.14
2.6.5
2.5.14

Affected products

  • SUSE Rancher

Classification

Weakness
  • CWE-319 Cleartext Transmission of Sensitive Information
  • CWE-311 Missing Encryption of Sensitive Data

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.