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Null pointer dereference in <code>_sqlite</code> execute via re-entrant sequence length

Status: Open.

#143380 In python/cpython;

· jackfromeast opened on Jan 3, 2026

Use-after-free in <code>s_pack_internal</code> via re-entrant <code>__bool__</code>

extension-modulesC modules in the Modules dirC modules in the Modules dir

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#143379 In python/cpython;

· jackfromeast opened on Jan 3, 2026

Use-after-free in <code>_io.BytesIO.writelines</code> via re-entrant <code>__buffer__</code> close

Status: Open.

#143378 In python/cpython;

· jackfromeast opened on Jan 3, 2026

Heap buffer overflow in <code>_format_TracebackException</code> when <code>TracebackException.format</code> omits newline

Status: Open.

#143377 In python/cpython;

· jackfromeast opened on Jan 3, 2026

Type confusion in <code>_channelid_shared</code> via unvalidated <code>_id</code> attribute

Status: Open.

#143376 In python/cpython;

· jackfromeast opened on Jan 3, 2026

Null pointer dereference in <code>BufferedWriter.seek</code> during re-entrant close

Status: Open.

#143375 In python/cpython;

· jackfromeast opened on Jan 3, 2026

<code>_Py_CallBuiltinClass_StackRefSteal</code> does not declare <code>PY_VECTORCALL_ARGUMENTS_OFFSET</code>

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#143361 In python/cpython;

· wjakob opened on Jan 2, 2026

JIT: Assertion <code>exc &amp;&amp; PyExceptionInstance_Check(exc)</code> failed in <code>*_PyEval_EvalFrameDefault</code>

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-JIT

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#143358 In python/cpython;

· devdanzin opened on Jan 2, 2026

Incorrect calculation of indentation width in case of mixed tabs and spaces in plistlib

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

3.15new features, bugs and security fixesnew features, bugs and security fixes

OS-mac

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#143346 In python/cpython;

· serhiy-storchaka opened on Jan 2, 2026

Remove deprecated "N" format for Decimal

extension-modulesC modules in the Modules dirC modules in the Modules dir

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#143331 In python/cpython;

· donbarbos opened on Jan 1, 2026

Use-after-free in <code>parse_envlist</code> via re-entrant <code>env.keys()</code> or <code>env.values()</code>

extension-modulesC modules in the Modules dirC modules in the Modules dir

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#143309 In python/cpython;

· jackfromeast opened on Dec 31, 2025

Use-after-free in <code>save_picklebuffer</code> via re-entrant <code>buffer_callback</code> and <code>__bool__</code>

extension-modulesC modules in the Modules dirC modules in the Modules dir

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#143308 In python/cpython;

· jackfromeast opened on Dec 31, 2025