Vulnerability-Lookup

GHSA-M67G-87RX-V42C

Vulnerability from github – Published: 2026-05-28 18:30 – Updated: 2026-05-28 18:30

Details

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.

Severity

6.0 (Medium)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-41185"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-532"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T17:16:22Z",
    "severity": "MODERATE"
  },
  "details": "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 \u2014 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\u00a0 can read these logs and extract the credentials, which grant cluster-wide Calico networking admin privileges.",
  "id": "GHSA-m67g-87rx-v42c",
  "modified": "2026-05-28T18:30:31Z",
  "published": "2026-05-28T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41185"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12502"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12526"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12527"
    },
    {
      "type": "WEB",
      "url": "https://www.tigera.io/security-bulletins/tta-2026-002"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-41185 (GCVE-0-2026-41185)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:47 – Updated: 2026-05-28 17:03

Title

ServiceAccount token disclosure via Azure IPAM CNI plugin logs

Summary

Severity

6 (Medium)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-532 - Insertion of sensitive information into log file

Assigner

Tigera

References

4 references

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

Impacted products

3 products

Vendor	Product	Version
Tigera	Calico	Affected: 0 , < 3.32.0 (semver)
Tigera	Calico Enterprise	Affected: 0 , < 3.21.7 (semver) Affected: 3.22.0 , < 3.22.3 (semver)
Tigera	Calico Cloud	Affected: 0 , < 22.4.0 (semver)

Date Public

2026-05-29 03:59

Credits

Behnam Shobiri Behnam Shobiri Anthony Tam Matt Dupre Casey Davenport

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-M67G-87RX-V42C

CVE-2026-41185 (GCVE-0-2026-41185)

Tags

Sightings

Nomenclature