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    2 vulnerabilities by retspen

    CVE-2026-92761 (GCVE-0-2026-92761)

    Vulnerability from nvd – Published: 2026-09-16 20:32 – Updated: 2026-09-16 20:32
    VLAI
    Title
    WebVirtCloud Missing Authorization on Instance Control Actions
    Summary
    WebVirtCloud fails to properly validate permission flags in UserInstance grants, allowing view-only users to perform privileged actions. Attackers with read-only grants can power off virtual machines, reset root passwords, install SSH keys, and manage ISO images by exploiting the get_instance gate that only checks grant existence.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    retspen webvirtcloud Affected: 1b2da68b2800f94674dd96f4a986cde30ac88280 (git)
    		Create a notification for this product.
    Date Public
    2026-06-21 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "webvirtcloud",
          "vendor": "retspen",
          "versions": [
            {
              "status": "affected",
              "version": "1b2da68b2800f94674dd96f4a986cde30ac88280",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-06-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "WebVirtCloud fails to properly validate permission flags in UserInstance grants, allowing view-only users to perform privileged actions. Attackers with read-only grants can power off virtual machines, reset root passwords, install SSH keys, and manage ISO images by exploiting the get_instance gate that only checks grant existence."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T20:32:28.410Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #682",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/retspen/webvirtcloud/issues/682"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/retspen/webvirtcloud"
        },
        {
          "name": "get_instance checks only that a grant exists, not its flags",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L316-L330"
        },
        {
          "name": "poweroff authorizes with get_instance alone",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L356-L363"
        },
        {
          "name": "resizevm_cpu shows the intended is_change enforcement",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L538-L546"
        },
        {
          "name": "VulnCheck Advisory: WebVirtCloud Missing Authorization on Instance Control Actions",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/webvirtcloud-missing-authorization-on-instance-control-actions"
        }
      ],
      "title": "WebVirtCloud Missing Authorization on Instance Control Actions",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-92761",
    "datePublished": "2026-09-16T20:32:28.410Z",
    "dateReserved": "2026-09-16T19:06:20.513Z",
    "dateUpdated": "2026-09-16T20:32:28.410Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-92761 (GCVE-0-2026-92761)

    Vulnerability from cvelistv5 – Published: 2026-09-16 20:32 – Updated: 2026-09-16 20:32
    VLAI
    Title
    WebVirtCloud Missing Authorization on Instance Control Actions
    Summary
    WebVirtCloud fails to properly validate permission flags in UserInstance grants, allowing view-only users to perform privileged actions. Attackers with read-only grants can power off virtual machines, reset root passwords, install SSH keys, and manage ISO images by exploiting the get_instance gate that only checks grant existence.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    retspen webvirtcloud Affected: 1b2da68b2800f94674dd96f4a986cde30ac88280 (git)
    		Create a notification for this product.
    Date Public
    2026-06-21 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "webvirtcloud",
          "vendor": "retspen",
          "versions": [
            {
              "status": "affected",
              "version": "1b2da68b2800f94674dd96f4a986cde30ac88280",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-06-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "WebVirtCloud fails to properly validate permission flags in UserInstance grants, allowing view-only users to perform privileged actions. Attackers with read-only grants can power off virtual machines, reset root passwords, install SSH keys, and manage ISO images by exploiting the get_instance gate that only checks grant existence."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T20:32:28.410Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #682",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/retspen/webvirtcloud/issues/682"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/retspen/webvirtcloud"
        },
        {
          "name": "get_instance checks only that a grant exists, not its flags",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L316-L330"
        },
        {
          "name": "poweroff authorizes with get_instance alone",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L356-L363"
        },
        {
          "name": "resizevm_cpu shows the intended is_change enforcement",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L538-L546"
        },
        {
          "name": "VulnCheck Advisory: WebVirtCloud Missing Authorization on Instance Control Actions",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/webvirtcloud-missing-authorization-on-instance-control-actions"
        }
      ],
      "title": "WebVirtCloud Missing Authorization on Instance Control Actions",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-92761",
    "datePublished": "2026-09-16T20:32:28.410Z",
    "dateReserved": "2026-09-16T19:06:20.513Z",
    "dateUpdated": "2026-09-16T20:32:28.410Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}