CVE-2026-41184

Name: CVE-2026-41184
Creator: NVD / NIST
Published: 2026-05-28T17:16:22.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2026-41184 is a medium-severity vulnerability rated 6/10 on the CVSS scale. In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the __SERVICEACCOUNT_TOKEN__ placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the __SERVICEACCOUNT_TOKEN__ placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS 4.0

6/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.50%

39.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-532

Affected Software

Vendor	Product	Versions
Tigera	Calico	< 3.21.7
Tigera	Calico	< 3.32.0
Tigera	Calico	< 22.4.0
Tigera	Calico	>= 3.22.0, < 3.22.3

References

https://github.com/projectcalico/calico/pull/12502Issue Tracking, Patch
https://github.com/projectcalico/calico/pull/12526Issue Tracking, Patch
https://github.com/projectcalico/calico/pull/12527Issue Tracking, Patch
https://www.tigera.io/security-bulletins/tta-2026-001/Mitigation, Vendor Advisory

Timeline

Published: May 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-41184?

How severe is CVE-2026-41184?

CVE-2026-41184 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2026-41184?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-41184?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST