CVE-2026-41185

MEDIUM EPSS 24.0%
Published May 28, 20261mo ago · Modified Jun 17, 20262w ago
6.0 CVSS 4.0
Medium
Find Similar
Published May 28, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.0
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
24.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-532

Affected Products 4

VendorProductVersionRange
tigeracalico* <3.21.7
tigeracalico* <3.32.0
tigeracalico* <22.4.0
tigeracalico*≥3.22.0  –  <3.22.3

References 4

  • github.com https://github.com/projectcalico/calico/pull/12502
    Issue Tracking
  • github.com https://github.com/projectcalico/calico/pull/12526
    Issue TrackingPatch
  • github.com https://github.com/projectcalico/calico/pull/12527
    Issue TrackingPatch
  • tigera.io https://www.tigera.io/security-bulletins/tta-2026-002/
    Vendor Advisory

Remediation

  • github.com https://github.com/projectcalico/calico/pull/12526
    Issue TrackingPatch
  • github.com https://github.com/projectcalico/calico/pull/12527
    Issue TrackingPatch