---
cve: "CVE-2026-49460"
severity: "MEDIUM"
cvss: 5.1
epss: "0.2%"
vendor: "py-pdf"
kev: false
exploited: false
published: "2026-06-22 21:16:24"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T07:10:41+02:00"
---

# CVE-2026-49460

> 5.1 MEDIUM · 🧪 PoC

## Beschreibung

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.

## CVSS-Vektor

```
CVSS:4.0/AV:L/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 | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- efad421b12fe47b269593ffca8e79a71c7aae065 (Commit)

## Referenzen

- <https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg>
- <https://github.com/py-pdf/pypdf/pull/3806>
- <https://github.com/py-pdf/pypdf/releases/tag/6.12.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49460) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_