CVE-2026-5713Out-of-bounds read/write during remote profiling and asyncio process introspection when connecting to malicious target

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.

Affected packages & fixed versions

Affected products (as reported)

References

• https://github.com/python/cpython/pull/148187 patch
• https://github.com/python/cpython/issues/148178 issue-tracking
• https://mail.python.org/archives/list/security-announce@python.org/thread/OG4RHARYSNIE22GGOMVMCRH76L5HKPLM/ vendor-advisory
• https://github.com/python/cpython/commit/289fd2c97a7e5aecb8b69f94f5e838ccfeee7e67 patch
• https://github.com/python/cpython/commit/316f6265b7f9ca4ffed5346b747475ef1943f35d patch
• http://www.openwall.com/lists/oss-security/2026/04/15/6