How severe is CVE-2026-41185?

CVE-2026-41185 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-41185 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41185?

CVE-2026-41185 primarily affects Tigera Calico. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-41185?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41185 have an EU (EUVD) identifier?

Yes. CVE-2026-41185 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32933.

When was CVE-2026-41185 published?

CVE-2026-41185 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-41185

CVE-2026-41185 is a medium-severity vulnerability in Tigera Calico with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.0
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32933
Weakness: CWE-532
Affected product: Tigera Calico
Published: 2026-05-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-41185?: 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.
How severe is CVE-2026-41185?: CVE-2026-41185 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-41185 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41185?: CVE-2026-41185 primarily affects Tigera Calico. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-41185?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41185 have an EU (EUVD) identifier?: Yes. CVE-2026-41185 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32933.
When was CVE-2026-41185 published?: CVE-2026-41185 was published on 2026-05-28 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*
cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:*

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