CVE-2026-73249

{
  "id": "CVE-2026-73249",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T22:19:05.687",
  "lastModified": "2026-10-24T15:10:00.190",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/{library_id}/{book_id}/{fmt} in src/calibre/srv/books.py omits needs_db_write=True, causing Router.dispatch() to skip ctx.check_for_write_access() before update_annotations() passes attacker-controlled JSON to db.merge_annotations_for_book(), which allows a readonly user or an anonymous user on an unauthenticated deployment to persist unauthorized book annotation changes. This issue is fixed in version 9.12.0."
    },
    {
      "lang": "es",
      "value": "calibre es un gestor de libros electrónicos. Antes de 9.12.0, el endpoint del Content Server de calibre POST /book-update-annotations/{library_id}/{book_id}/{fmt} en src/calibre/srv/books.py omite needs_db_write=True, causando que Router.dispatch() omita ctx.check_for_write_access() antes de que update_annotations() pase JSON controlado por el atacante a db.merge_annotations_for_book(), lo que permite a un usuario de solo lectura o a un usuario anónimo en una implementación no autenticada persistir cambios no autorizados en las anotaciones de libros. Este problema está solucionado en la versión 9.12.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "kovidgoyal",
          "product": "calibre",
          "versions": [
            {
              "version": "< 9.12.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-12T12:41:56.031175Z",
          "id": "CVE-2026-73249",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}