---
cve: "CVE-2026-73248"
severity: "HIGH"
cvss: 8.5
epss: "15%"
vendor: "kovidgoyal"
kev: false
exploited: false
published: "2026-08-11 22:19:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T10:42:18+02:00"
---

# CVE-2026-73248

> 8.5 HIGH · 🧪 PoC

## Beschreibung

calibre is an e-book manager. Prior to 9.12.0, calibre processes attacker-controlled composite_template metadata from a malicious EPUB, OPF, PDF, or similar file through program: and a nested template() call whose formatter does not inherit allow_python_templates=False, allowing a nested python: template to reach compile_python_template and execute arbitrary Python code when the file is opened or imported. This issue is fixed in version 9.12.0.

## 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)

- dac9990458374a81a5372a768bba6527d965aac8 (Commit)
- 993dd952284ce4bb8199ddeef20643f94bb0b437 (Commit)

## Referenzen

- <https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4f7g-rjfp-hmvx>
- <https://github.com/kovidgoyal/calibre/commit/dac9990458374a81a5372a768bba6527d965aac8>
- <https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73248) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_