CVE-2026-5713 Out-of-bounds read/write during remote profiling and asyncio process introspection when connecting to malicious target
A malicious Python process can trigger out-of-bounds reads and writes in a privileged process via remote profiling or asyncio introspection features.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-5713?
CVE-2026-5713 is a medium-severity memory corruption vulnerability in CPython, published on 14 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-5713?
3 open source packages ship an affected version, including libpython, python and python-min.
| Package | Affected | Fixed in |
|---|---|---|
libpython Bitnami | From 3.14.0 | 3.14.5 |
python Bitnami | From 3.14.0 | 3.14.5 |
python-min Bitnami | From 3.14.0 | 3.14.5 |
How do I fix CVE-2026-5713?
Upgrade libpython to 3.14.5 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-5713 being exploited?
There is no known exploitation of CVE-2026-5713 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-5713, BIT-libpython-2026-5713, BIT-python-2026-5713, BIT-python-min-2026-5713, DEBIAN-CVE-2026-5713, GHSA-2w92-jcqh-43jc and 3 more.