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NVD / CVE Program· CNA Tigera

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

Noroxi assessment

Priority: Monitor (action score 24/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.32% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Tigera Calico 3.32.0; Tigera Calico Cloud 22.4.0; Tigera Calico Enterprise 3.21.7, 3.22.3.

Low priority for now. Upgrade to Tigera Calico 3.32.0; Tigera Calico Cloud 22.4.0; Tigera Calico Enterprise 3.21.7, 3.22.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 6.0 · v4.0—No exploit Fix available
Published
May 28, 2026
Updated
Jun 17, 2026
EPSS
0.3% · 25th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Tigera
6.0
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-41185

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
tigeracalico

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tigera calicobefore 3.21.7
  • tigera calicobefore 3.32.0
  • tigera calicobefore 22.4.0
  • tigera calico3.22.0 and later · before 3.22.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Tigera). Independent of NVD's CPE analysis and usually ahead of it.

  • Tigera Calico

    • before 3.32.0affected · semver

  • Tigera Calico Cloud

    • before 22.4.0affected · semver

  • Tigera Calico Enterprise

    • before 3.21.7affected · semver
    • 3.22.0 and later · before 3.22.3affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Gogithub.com/projectcalico/calicofrom 2.0.0 · before 3.31.63.31.6
Gogithub.com/projectcalico/calicobefore 1.11.0-cni-plugin.0.20260417001138-cd73bc2cea0f1.11.0-cni-plugin.0.20260417001138-cd73bc2cea0f
Gogithub.com/projectcalico/calico/v3from 0—

Same product

tigera: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-6540L7 policy bypass via unnormalized HTTP path matching
    31Monitor
  • CVE-2026-6720Calicoctl leaks cluster credentials to stderr when verbose logging is enabled
    28Monitor
  • CVE-2024-33522Privilege escalation in Calico CNI install binary
    26Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2022-28224Jun 6, 2022 · Calico and Calico Enterprise may be vulnerable to route hijacking with the floating IP feature
    22Monitor
  • Later →CVE-2026-41184May 28, 2026 · ServiceAccount token disclosure via install-cni container logs
    24Monitor
  • Later →CVE-2026-41186Jul 30, 2026 · Unauthenticated Go pprof exposure in Calico debug server
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Tigera Calico3.32.0Vendor (CNA)
Tigera Calico Cloud22.4.0Vendor (CNA)
Tigera Calico Enterprise3.21.7Vendor (CNA)
Tigera Calico Enterprise3.22.3Vendor (CNA)
Go:github.com/projectcalico/calico1.11.0-cni-plugin.0.20260417001138-cd73bc2cea0fPackage registry (OSV)
Go:github.com/projectcalico/calico3.31.6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-67200 days apartCalicoctl leaks cluster credentials to stderr when verbose logging is enabled
    28Monitor
  • CVE-2026-411840 days apartServiceAccount token disclosure via install-cni container logs
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-532 · Insertion of Sensitive Information into Log File

CVSS 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/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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records