{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "plainpad",
          "vendor": "alextselegidis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.1.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.3,
            "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:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-09T19:09:48.862Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6"
        },
        {
          "name": "https://github.com/alextselegidis/plainpad/issues/138",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/alextselegidis/plainpad/issues/138"
        },
        {
          "name": "https://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc"
        },
        {
          "name": "https://github.com/alextselegidis/plainpad/releases/tag/1.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/alextselegidis/plainpad/releases/tag/1.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-pvfv-wvpm-q6f6",
        "discovery": "UNKNOWN"
      },
      "title": "Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42562",
    "datePublished": "2026-05-09T19:09:48.862Z",
    "dateReserved": "2026-04-28T16:56:50.192Z",
    "dateUpdated": "2026-05-09T19:09:48.862Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-42562\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-05-09T20:16:28.933\",\"lastModified\":\"2026-05-09T20:16:28.933\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L\",\"baseScore\":8.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":5.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-269\"}]}],\"references\":[{\"url\":\"https://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/alextselegidis/plainpad/issues/138\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/alextselegidis/plainpad/releases/tag/1.1.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}