CVE-2026-56228 (GCVE-0-2026-56228)

Vulnerability from cvelistv5 – Published: 2026-06-20 15:24 – Updated: 2026-06-20 15:24
VLAI
Title
Capgo - Denial of Service via Improper Password Policy Length Validation
Summary
Capgo before 12.128.2 fails to enforce a maximum value on the minimum password length field in its password policy configuration. An authenticated organization administrator can set an extremely large numeric value (e.g., billions of characters) as the minimum password length, making compliance impossible for all organization members. Once the policy is enabled, users (including administrators) are unable to change their passwords or access the organization, resulting in an organization-wide account lockout and application-level denial of service.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Capgo Capgo Affected: 0 , < 12.128.2 (semver)
Unaffected: 12.128.2 (semver)
Create a notification for this product.
Date Public
2026-03-19 00:00
Show details on NVD website
To clipboard 

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        {
          "defaultStatus": "unaffected",
          "product": "Capgo",
          "vendor": "Capgo",
          "versions": [
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              "lessThan": "12.128.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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              "version": "12.128.2",
              "versionType": "semver"
            }
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        }
      ],
      "datePublic": "2026-03-19T00:00:00.000Z",
      "descriptions": [
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          "lang": "en",
          "value": "Capgo before 12.128.2 fails to enforce a maximum value on the minimum password length field in its password policy configuration. An authenticated organization administrator can set an extremely large numeric value (e.g., billions of characters) as the minimum password length, making compliance impossible for all organization members. Once the policy is enabled, users (including administrators) are unable to change their passwords or access the organization, resulting in an organization-wide account lockout and application-level denial of service."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-20T15:24:41.990Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GHSA Advisory GHSA-vhjp-62qf-33mx",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/Cap-go/capgo/security/advisories/GHSA-vhjp-62qf-33mx"
        },
        {
          "name": "VulnCheck Advisory: Capgo - Denial of Service via Improper Password Policy Length Validation",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/capgo-denial-of-service-via-improper-password-policy-length-validation"
        }
      ],
      "title": "Capgo - Denial of Service via Improper Password Policy Length Validation",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-56228",
    "datePublished": "2026-06-20T15:24:41.990Z",
    "dateReserved": "2026-06-19T21:46:58.631Z",
    "dateUpdated": "2026-06-20T15:24:41.990Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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