---
cve: "CVE-2026-53511"
severity: "HIGH"
cvss: 8.5
epss: "15%"
vendor: "kovidgoyal"
kev: false
exploited: false
published: "2026-07-07 21:17:26"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T10:43:33+02:00"
---

# CVE-2026-53511

> 8.5 HIGH · 🧪 PoC

## Beschreibung

calibre is an e-book manager. Prior to 9.10.0, a malicious EPUB, OPF, or PDF file can execute arbitrary Python code when its metadata is read by calibre, including through Add books or Edit books, by embedding a custom column definition with a python: template in calibre:user_metadata that is passed unsanitized to exec() in the template formatter. This issue is fixed in version 9.10.0.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 712f4e1ff5c1e798c335bef3bacc4efdee052e9c (Commit)
- d90f85753312d9c5fbd22ff687b83839282fc393 (Commit)

## Referenzen

- <https://github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47>
- <https://github.com/kovidgoyal/calibre/commit/712f4e1ff5c1e798c335bef3bacc4efdee052e9c>
- <https://github.com/kovidgoyal/calibre/releases/tag/v9.10.0>
- <https://lists.debian.org/debian-lts-announce/2026/08/msg00034.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53511) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_