---
cve: "CVE-2025-4435"
severity: "HIGH"
cvss: 7.5
epss: "52%"
vendor: "Python Software Foundation"
kev: false
exploited: false
published: "2025-06-03 13:15:20"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T05:38:41+02:00"
---

# CVE-2025-4435

> 7.5 HIGH · 🧪 PoC

## Beschreibung

When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 865270262ade38b96fce88e32a321caac5332a87 (Commit)
- 88663ef89ba3576df02cc818c653f91c7d5dd023 (Commit)

## Referenzen

- <https://github.com/python/cpython/issues/135034>
- <https://github.com/python/cpython/pull/135037>
- <https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/>
- <https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a>
- <https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a>
- <https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da>
- <https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01>
- <https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9>
- <https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e>
- <https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a>
- <https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-4435) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_