FKIE_CVE-2026-41187

Vulnerability from fkie_nvd - Published: 2026-07-30 15:16 - Updated: 2026-08-08 01:16
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Calico's apiserver wraps tier-scoped resources so that every operation runs through AuthorizeTierOperation, but the Delete override on NetworkPolicy, GlobalNetworkPolicy, and their staged variants is not invoked for DeleteCollection requests. A user holding the deletecollection verb or wildcard verbs on tier-scoped policy resources can bulk-delete policies in tiers they otherwise have no rights on, breaking the tier authorization boundary.
References
psirt@tigera.iohttps://github.com/projectcalico/calico/pull/12731Issue Tracking, Patch
psirt@tigera.iohttps://github.com/projectcalico/calico/pull/12735Issue Tracking, Patch
psirt@tigera.iohttps://github.com/projectcalico/calico/pull/12736Issue Tracking, Patch
psirt@tigera.iohttps://github.com/projectcalico/calico/pull/12737Issue Tracking, Patch
psirt@tigera.iohttps://www.tigera.io/security-bulletins/tta-2026-006/Vendor Advisory
Impacted products
Vendor Product Version
tigera calico *
tigera calico *
tigera calico *
tigera calico *
tigera calico *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Calico",
          "vendor": "Tigera",
          "versions": [
            {
              "lessThan": "3.31.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.32.1",
              "status": "affected",
              "version": "3.32.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Calico Enterprise",
          "vendor": "Tigera",
          "versions": [
            {
              "lessThan": "3.21.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.22.5",
              "status": "affected",
              "version": "3.22.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Calico Cloud",
          "vendor": "Tigera",
          "versions": [
            {
              "lessThan": "22.4.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "psirt@tigera.io"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "68BC4A3E-A53E-463F-B627-EB21276BE079",
              "versionEndExcluding": "3.21.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*",
              "matchCriteriaId": "1DB36B83-2C1A-4D26-8E29-C4BB8D7AEFD2",
              "versionEndExcluding": "3.31.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:*",
              "matchCriteriaId": "62C57322-0A64-41C8-8145-E1471107973D",
              "versionEndIncluding": "22.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "E4BE9961-DD19-41BE-8F40-456752DB141A",
              "versionEndExcluding": "3.22.4",
              "versionStartIncluding": "3.22.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*",
              "matchCriteriaId": "BE55BC32-7899-4C2A-8EED-A81B36E95077",
              "versionEndExcluding": "3.32.1",
              "versionStartIncluding": "3.32.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Calico\u0027s apiserver wraps tier-scoped resources so that every operation runs through AuthorizeTierOperation, but the Delete override on NetworkPolicy, GlobalNetworkPolicy, and their staged variants is not invoked for DeleteCollection requests. A user holding the deletecollection verb or wildcard verbs on tier-scoped policy resources can bulk-delete policies in tiers they otherwise have no rights on, breaking the tier authorization boundary."
    }
  ],
  "id": "CVE-2026-41187",
  "lastModified": "2026-08-08T01:16:27.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:L/SA:H/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "psirt@tigera.io",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41187",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-30T16:11:20.822241Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-30T15:16:31.860",
  "references": [
    {
      "source": "psirt@tigera.io",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/projectcalico/calico/pull/12731"
    },
    {
      "source": "psirt@tigera.io",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/projectcalico/calico/pull/12735"
    },
    {
      "source": "psirt@tigera.io",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/projectcalico/calico/pull/12736"
    },
    {
      "source": "psirt@tigera.io",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/projectcalico/calico/pull/12737"
    },
    {
      "source": "psirt@tigera.io",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.tigera.io/security-bulletins/tta-2026-006/"
    }
  ],
  "sourceIdentifier": "psirt@tigera.io",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "psirt@tigera.io",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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