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Fencer Vulns
high 8.8

CVE-2021-3495 json

Access control flaw in Kiali

published 2021-06-01 5 y ago modified 2026-06-17 4 mo ago also GHSA-mv55-23xp-3wp8 , GO-2022-0645 , EUVD-2021-1363

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

An incorrect access control flaw was found in the kiali-operator in versions before 1.33.0 and before 1.24.7. This flaw allows an attacker with a basic level of access to the cluster (to deploy a kiali operand) to use this vulnerability and deploy a given image to anywhere in the cluster, potentially gaining access to privileged service account tokens. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Patch / fix

  • go github.com/kiali/kiali 1.33.0
  • netlify kiali-operator 1.24.7, 1.33.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3495 updated cvss 8.8

kiali/kiali-operator: can deploy specified image to any namespace

  • Red Hat OpenShift Service Mesh 1 openshift-service-mesh/kiali-rhel7-operator
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Service Mesh 2.0 openshift-service-mesh/kiali-rhel8-operator 1.24.7-1
    fixed: vendor fix RHSA-2021:1544

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/kiali/kiali
<1.33.0
1.33.0

Affected products

  • n/a kiali/kiali-operator

Classification

Weakness
  • CWE-281 Improper Preservation of Permissions

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.