---
cve: "CVE-2026-73249"
severity: "HIGH"
cvss: 7.5
epss: "25%"
vendor: "kovidgoyal"
kev: false
exploited: false
published: "2026-08-11 21:58:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T05:51:56+02:00"
---

# CVE-2026-73249

> 7.5 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 71295e8b62801e1ccecaa4fac47e6942f11cfe1e (Commit)
- 993dd952284ce4bb8199ddeef20643f94bb0b437 (Commit)

## Referenzen

- <https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6>
- <https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e>
- <https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73249) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_