---
cve: "CVE-2026-11972"
severity: "HIGH"
cvss: 8.2
epss: "45%"
vendor: "Python Software Foundation"
kev: false
exploited: false
published: "2026-06-23 23:16:49"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T09:06:07+02:00"
---

# CVE-2026-11972

> 8.2 HIGH · 🧪 PoC

## Beschreibung

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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)

- 3a19c2f0b3e91ce8f23d0cc64d4c9ee557823f24 (Commit)
- 41388c9cb160d0886d5ca00d2e6c8782608a4549 (Commit)

## Referenzen

- <https://github.com/python/cpython/issues/151981>
- <https://github.com/python/cpython/pull/151982>
- <https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/>
- <https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9>
- <https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365>
- <https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21>
- <https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec>
- <https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192>
- <https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896>
- <https://github.com/python/cpython/commit/f5e2776ff0383a902c12acf2b703e7e951fc8438>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-11972) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_