CPython: Schwachstelle ermöglicht nicht spezifizierten Angriff
WID-SEC-2026-1222 · first 22.04.2026 · updated 22.04.2026 · CVSS 8,6
What it is about
Python ist eine universelle, üblicherweise interpretierte, höhere Programmiersprache. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in CPython ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen nicht näher spezifizierten Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Open Source Python CPython <3.15.0
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Python CPython 3.15.0
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Python Mailing List vom 2026-04-21 mail.python.org
- CVERecord vom 2026-04-21 www.cve.org
CVE: CVE-2026-3298
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.