{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "vikunja",
          "vendor": "go-vikunja",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, including their secret hashes. While `LinkSharing.CanRead()` correctly blocks link share users from reading individual shares via `ReadOne`, the `ReadAllWeb` handler bypasses this check by never calling `CanRead()`. An attacker with a read-only link share can retrieve hashes for write or admin link shares on the same project and authenticate with them, escalating to full admin access. Version 2.2.2 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-24T15:47:47.529Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9"
        },
        {
          "name": "https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3"
        },
        {
          "name": "https://vikunja.io/changelog/vikunja-v2.2.2-was-released",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://vikunja.io/changelog/vikunja-v2.2.2-was-released"
        }
      ],
      "source": {
        "advisory": "GHSA-8hp8-9fhr-pfm9",
        "discovery": "UNKNOWN"
      },
      "title": "Vikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33680",
    "datePublished": "2026-03-24T15:47:47.529Z",
    "dateReserved": "2026-03-23T16:34:59.931Z",
    "dateUpdated": "2026-03-24T15:47:47.529Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-33680\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-03-24T16:16:35.570\",\"lastModified\":\"2026-03-25T15:41:58.280\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, including their secret hashes. While `LinkSharing.CanRead()` correctly blocks link share users from reading individual shares via `ReadOne`, the `ReadAllWeb` handler bypasses this check by never calling `CanRead()`. An attacker with a read-only link share can retrieve hashes for write or admin link shares on the same project and authenticate with them, escalating to full admin access. Version 2.2.2 patches the issue.\"},{\"lang\":\"es\",\"value\":\"Vikunja es una plataforma de gesti\u00f3n de tareas de c\u00f3digo abierto autoalojada. Antes de la versi\u00f3n 2.2.2, el m\u00e9todo `LinkSharing.ReadAll()` permite a los usuarios autenticados con un enlace compartido listar todos los enlaces compartidos de un proyecto, incluyendo sus hashes secretos. Si bien `LinkSharing.CanRead()` bloquea correctamente a los usuarios de enlaces compartidos de leer enlaces compartidos individuales a trav\u00e9s de `ReadOne`, el gestor `ReadAllWeb` omite esta verificaci\u00f3n al no llamar nunca a `CanRead()`. Un atacante con un enlace compartido de solo lectura puede recuperar hashes de enlaces compartidos de escritura o de administrador en el mismo proyecto y autenticarse con ellos, escalando a acceso de administrador completo. La versi\u00f3n 2.2.2 corrige el problema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-285\"}]}],\"references\":[{\"url\":\"https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://vikunja.io/changelog/vikunja-v2.2.2-was-released\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}