Vulnerability-Lookup

GHSA-9P7W-W5Q6-MXJ3

Vulnerability from github – Published: 2026-05-28 18:30 – Updated: 2026-06-05 18:31

Details

In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the SERVICEACCOUNT_TOKEN placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-41184"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-532"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T17:16:22Z",
    "severity": "MODERATE"
  },
  "details": "In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the __SERVICEACCOUNT_TOKEN__ placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.",
  "id": "GHSA-9p7w-w5q6-mxj3",
  "modified": "2026-06-05T18:31:32Z",
  "published": "2026-05-28T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41184"
    },
    {
      "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-2026-001"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "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-2026-41184 (GCVE-0-2026-41184)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:47 – Updated: 2026-05-28 17:04

Title

ServiceAccount token disclosure via install-cni container logs

Summary

In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the __SERVICEACCOUNT_TOKEN__ placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.

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-2026-001/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Tigera	Calico	Unaffected: 3.32.0 (semver) Affected: 0 , < 3.31.6 (semver)

Date Public

2026-05-28 16:00

Credits

Behnam Shobiri Behnam Shobiri Anthony Tam Matt Dupre Casey Davenport

Show details on NVD website

JSON

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                  }
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                "timestamp": "2026-05-28T17:04:29.437633Z",
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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-9P7W-W5Q6-MXJ3

CVE-2026-41184 (GCVE-0-2026-41184)

Tags

Sightings

Nomenclature