---
cve: "CVE-2025-8194"
severity: "HIGH"
cvss: 7.5
epss: "61%"
vendor: "Python Software Foundation"
kev: false
exploited: false
published: "2025-07-28 19:15:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T05:38:42+02:00"
---

# CVE-2025-8194

> 7.5 HIGH · 🧪 PoC

## Beschreibung

There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives. 

This vulnerability can be mitigated by including the following patch after importing the “tarfile” module:  https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1

## CVSS-Vektor

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

| 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 | Hoch | bad |

## Patch verfügbar (OSV)

- 91bdb00dfed8634de52e2f64cba7545deb20f74c (Commit)
- f08d3c437bc5f41973ddd11f4cfc3d9fe04010f7 (Commit)

## Referenzen

- <https://github.com/python/cpython/issues/130577>
- <https://github.com/python/cpython/pull/137027>
- <https://mail.python.org/archives/list/security-announce@python.org/thread/ZULLF3IZ726XP5EY7XJ7YIN3K5MDYR2D/>
- <https://github.com/python/cpython/commit/7040aa54f14676938970e10c5f74ea93cd56aa38>
- <https://github.com/python/cpython/commit/cdae923ffe187d6ef916c0f665a31249619193fe>
- <https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1>
- <https://github.com/python/cpython/commit/c9d9f78feb1467e73fd29356c040bde1c104f29f>
- <https://github.com/python/cpython/commit/fbc2a0ca9ac8aff6887f8ddf79b87b4510277227>
- <https://github.com/python/cpython/commit/57f5981d6260ed21266e0c26951b8564cc252bc2>
- <https://github.com/python/cpython/commit/73f03e4808206f71eb6b92c579505a220942ef19>
- <https://github.com/python/cpython/commit/b4ec17488eedec36d3c05fec127df71c0071f6cb>
- <http://www.openwall.com/lists/oss-security/2025/07/28/1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-8194) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_