---
cve: "CVE-2026-59203"
severity: "MEDIUM"
cvss: 5.3
epss: "40%"
vendor: "python-pillow"
kev: false
exploited: false
published: "2026-07-14 16:17:02"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T10:31:35+02:00"
---

# CVE-2026-59203

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. This issue is fixed in version 12.3.0.

## CVSS-Vektor

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

| 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 | Keine | good |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- bb1d8e8ab8d29048624d96e3ee53cecf7c13d13d (Commit)
- 03992618118b4a76b6163cd72ab5ecd684133b83 (Commit)

## Referenzen

- <https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798>
- <https://github.com/python-pillow/Pillow/pull/9708>
- <https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83>
- <https://github.com/python-pillow/Pillow/releases/tag/12.3.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59203) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_