Vulnerability-Lookup

GHSA-H3H4-J2QV-PV4J

Vulnerability from github – Published: 2026-07-30 15:31 – Updated: 2026-07-30 15:31

Details

When Calico's shared debug server is enabled (disabled by default), the Calico kube-controllers and Goldmane components bind their Go pprof debug listener to 0.0.0.0 without authentication. Any pod with network reachability to the listener can retrieve the process heap, goroutine stacks (including function arguments), and command-line arguments. Depending on the process's in-memory state, the heap may contain sensitive material. The debug listener is opt-in but is unsafe when enabled because it offers no authentication and no safe localhost-only binding option.

Severity

6.0 (Medium)


                  
                    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L

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{
  "affected": [],
  "aliases": [
    "CVE-2026-41186"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-30T15:16:31Z",
    "severity": "MODERATE"
  },
  "details": "When Calico\u0027s shared debug server is enabled (disabled by default), the Calico kube-controllers and Goldmane components bind their Go pprof debug listener to 0.0.0.0 without authentication. Any pod with network reachability to the listener can retrieve the process heap, goroutine stacks (including function arguments), and command-line arguments. Depending on the process\u0027s in-memory state, the heap may contain sensitive material. The debug listener is opt-in but is unsafe when enabled because it offers no authentication and no safe localhost-only binding option.",
  "id": "GHSA-h3h4-j2qv-pv4j",
  "modified": "2026-07-30T15:31:52Z",
  "published": "2026-07-30T15:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41186"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12491"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12633"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectcalico/calico/pull/12634"
    },
    {
      "type": "WEB",
      "url": "https://www.tigera.io/security-bulletins/tta-2026-004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/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-2026-41186 (GCVE-0-2026-41186)

Vulnerability from cvelistv5 – Published: 2026-07-30 14:45 – Updated: 2026-07-30 16:10

Title

Unauthenticated Go pprof exposure in Calico debug server

Summary

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:A/AC:L/AT:P/PR:N/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-489 - Active Debug Code
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

Tigera

References

4 references

URL	Tags
https://github.com/projectcalico/calico/pull/12491	patch
https://github.com/projectcalico/calico/pull/12634	patch
https://github.com/projectcalico/calico/pull/12633	patch
https://www.tigera.io/security-bulletins/tta-2026-004/	vendor-advisory

Impacted products

3 products

Vendor	Product	Version
Tigera	Calico	Affected: 0 , < 3.31.6 (semver) Affected: 3.32.0 , < 3.32.1 (semver)
Tigera	Calico Enterprise	Affected: 0 , < 3.21.7 (semver) Affected: 3.22.0 , < 3.22.4 (semver)
Tigera	Calico Cloud	Affected: 0 , < 22.4.0 (semver)

Date Public

2026-07-30 16:00

Credits

Behnam Shobiri Behnam Shobiri Anthony Tam Matt Dupre

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JSON

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

GHSA-H3H4-J2QV-PV4J

CVE-2026-41186 (GCVE-0-2026-41186)

Tags

Sightings

Nomenclature