[oss-security][CVE-2026-5713] CPython: Out-of-bounds read/write during remote debugging when connecting to malicious target

[Alan Coopersmith <alan.coopersmith () oracle com>]

https://www.cve.org/CVERecord?id=CVE-2026-5713 provides additional details
on the affected versions:

> The "profiling.sampling" module (Python 3.15+) and "asyncio
> introspection capabilities" (3.14+, "python -m asyncio ps" and "python
> -m asyncio pstree") features could be used to read and write addresses
> in a privileged process if that process connected to a malicious or
> "infected" Python process via the remote debugging feature. This
> vulnerability requires persistently and repeatedly connecting to the
> process to be exploited, even after the connecting process crashes
> with high likelihood due to ASLR.

------- Forwarded Message --------
Subject: 	[Security-announce][CVE-2026-5713] Out-of-bounds read/write during 
remote debugging when connecting to malicious target
Date:   Tue, 14 Apr 2026 15:13:09 +0000
From:   Seth Larson <seth () python org>
Reply-To:       security-sig () python org
To:     security-announce () python org



There is a MEDIUM severity vulnerability affecting CPython.

The Python remote debugging feature could be used to read and write addresses in 
a privileged process if that process connected to a malicious or "infected" 
Python process via the remote debugging feature. This vulnerability requires 
persistently and repeatedly connecting to the process to be exploited, even 
after the connecting process crashes with high likelihood due to ASLR.

Please see the linked CVE ID for the latest information on affected versions:

* https://www.cve.org/CVERecord?id=CVE-2026-5713
* https://github.com/python/cpython/pull/148187

_______________________________________________
Security-announce mailing list -- security-announce () python org
To unsubscribe send an email to security-announce-leave () python org
https://mail.python.org/mailman3//lists/security-announce.python.org