CVE-2026-41185Network attack vector

Credential disclosure via Azure IPAM CNI logging

Published May 28, 2026 · Updated May 28, 2026

Information disclosure in affected Tigera Calico products allows remote authenticated users to obtain cluster credentials from CNI logs. The Azure IPAM helper writes the complete mutated stdinData map to /var/log/calico/cni/cni.log, including tokens, client keys, and certificate authorities. Exposure requires Azure IPAM, token-based Kubernetes authentication, and log-read access; extracted credentials grant cluster-wide Calico networking administration.

CVSS severity6.0
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in affected Tigera Calico products allows remote authenticated users to obtain cluster credentials from CNI logs. The Azure IPAM helper writes the complete mutated stdinData map to /var/log/calico/cni/cni.log, including tokens, client keys, and certificate authorities. Exposure requires Azure IPAM, token-based Kubernetes authentication, and log-read access; extracted credentials grant cluster-wide Calico networking administration.

The record

CVE
CVE-2026-41185
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Tigera
Product
Calico
Classifications
CWE-200, CWE-532, CAPEC-150, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.32.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Tigera · Calicoversion=0 <3.32.0
Tigera · Calico Enterpriseversion=0 <3.21.7; version=3.22.0 <3.22.3
Tigera · Calico Cloudversion=0 <22.4.0

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.0TigeraCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-532Insertion of Sensitive Information into Log File
CAPEC-150Collect Data from Common Resource Locations
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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