---
cve: "CVE-2026-57204"
severity: "MEDIUM"
cvss: 6.9
epss: "21%"
vendor: "py-pdf"
kev: false
exploited: false
published: "2026-06-30 22:16:57"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:06:38+02:00"
---

# CVE-2026-57204

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 9aa05e7bde29a55e3ddb938347082e0d6e333e17 (Commit)

## Referenzen

- <https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94>
- <https://github.com/py-pdf/pypdf/releases/tag/6.13.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-57204) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_