FKIE_CVE-2026-6816

Vulnerability from fkie_nvd - Published: 2026-05-28 23:16 - Updated: 2026-07-21 10:10
Severity
3.8 (Low) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Summary
An access bypass vulnerability in Drupal TFA Basic Plugins allows users with the administer users permission to view or generate recovery codes for other users. This issue affects TFA Basic Plugins: from 7.x-1.0 through 7.x-1.2.
References
mlhess@drupal.orghttps://d7es.tag1.com/security-advisories/tfa-basic-plugins-less-critical-access-bypass-sa-contrib-2025-085Third Party Advisory
mlhess@drupal.orghttps://www.herodevs.com/vulnerability-directory/cve-2026-6816Exploit, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.herodevs.com/vulnerability-directory/cve-2026-6816?nes-for-drupal-7Exploit, Third Party Advisory
Impacted products
Vendor Product Version
tfa_basic_plugins_project tfa_basic_plugins *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.drupal.org/project/tfa_basic",
          "defaultStatus": "unknown",
          "product": "TFA Basic Plugins",
          "repo": "https://git.drupalcode.org/project/tfa_basic",
          "vendor": "Drupal",
          "versions": [
            {
              "lessThanOrEqual": "7.x-1.2",
              "status": "affected",
              "version": "7.x-1.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "mlhess@drupal.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tfa_basic_plugins_project:tfa_basic_plugins:*:*:*:*:*:drupal:*:*",
              "matchCriteriaId": "ACFFA1F8-5F80-4E2C-8366-3EEEB26F279C",
              "versionEndExcluding": "7.x-1.3",
              "versionStartIncluding": "7.x-1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An access bypass vulnerability in Drupal TFA Basic Plugins allows users with the administer users permission to view or generate recovery codes for other users.\n\n\nThis issue affects TFA Basic Plugins: from 7.x-1.0 through 7.x-1.2."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de omisi\u00f3n de acceso en los plugins b\u00e1sicos de TFA de Drupal permite a los usuarios con el permiso \u0027administrar usuarios\u0027 ver o generar c\u00f3digos de recuperaci\u00f3n para otros usuarios.\n\nEste problema afecta a los plugins b\u00e1sicos de TFA: desde 7.x-1.0 hasta 7.x-1.2."
    }
  ],
  "id": "CVE-2026-6816",
  "lastModified": "2026-07-21T10:10:00.103",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.8,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 2.5,
        "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": 5.1,
          "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": "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:L/VI:L/VA:N/SC:N/SI:N/SA:N/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": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "mlhess@drupal.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-6816",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T18:33:12.747287Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-28T23:16:44.637",
  "references": [
    {
      "source": "mlhess@drupal.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://d7es.tag1.com/security-advisories/tfa-basic-plugins-less-critical-access-bypass-sa-contrib-2025-085"
    },
    {
      "source": "mlhess@drupal.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2026-6816"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2026-6816?nes-for-drupal-7"
    }
  ],
  "sourceIdentifier": "mlhess@drupal.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-267"
        }
      ],
      "source": "mlhess@drupal.org",
      "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.

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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.
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