---
cve: "CVE-2026-71852"
severity: "MEDIUM"
cvss: 4.8
epss: "0.1%"
vendor: "py-pdf"
kev: false
exploited: false
published: "2026-08-07 18:53:46"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T14:43:53+02:00"
---

# CVE-2026-71852

> 4.8 MEDIUM · 🧪 PoC

## Beschreibung

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7 (Commit)
- 7f226a2771da4b71ed0b72d414f0e59d76a3dae9 (Commit)

## Referenzen

- <https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42>
- <https://github.com/py-pdf/pypdf/pull/3946>
- <https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7>
- <https://github.com/py-pdf/pypdf/releases/tag/6.15.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-71852) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_