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CVE-2026-6019 fix does not handle non-ascii chars correctly

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.

#149144 In python/cpython;

· msmeissn opened on Apr 29, 2026

_decimal: mpd_context_t::status/traps mutated non-atomically leading to data race

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

topic-free-threading

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

Status: Open.

#149142 In python/cpython;

· devdanzin opened on Apr 29, 2026

_get_name_from_path() in Lib/unittest/loader.py fails when src path contains symlinks

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.

#149141 In python/cpython;

· neek78 opened on Apr 29, 2026

Incorrect handling of backslashes in RECORD file by importlib.metadata

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.

#149137 In python/cpython;

· markuspi opened on Apr 29, 2026

Error on build posixmodule.c in old Cygwin

buildThe build process and cross-buildThe build process and cross-build

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

OS-unsupported

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

Status: Open.

#149125 In python/cpython;

· TrueCat17 opened on Apr 29, 2026

When building with PGO in Cygwin, the gcov profiling library is missing

buildThe build process and cross-buildThe build process and cross-build

OS-unsupported

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

Status: Open.

#149124 In python/cpython;

· TrueCat17 opened on Apr 29, 2026

asyncio on Windows raises InvalidStateError after WinError 995

OS-windows

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

topic-asyncio

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

Status: Open.

#149123 In python/cpython;

· maxliaops opened on Apr 29, 2026

runpy.run_module for a non-existent module raises an ImportError without name set to None

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.

#149117 In python/cpython;

· godlygeek opened on Apr 28, 2026

Fallo en el path al instalarlo y usarlo en visual

pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided

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

Status: Open.

#149082 In python/cpython;

· ssquinche-oss opened on Apr 28, 2026

test_socket tests fail with kernel lacking support for IPPROTO_UDPLITE

testsTests in the Lib/test dirTests in the Lib/test dir

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

Status: Open.

#149078 In python/cpython;

· mcepl opened on Apr 27, 2026

json.load doesn't properly forward array_hook to json.loads

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.

#149056 In python/cpython;

· KowalskiThomas opened on Apr 27, 2026

StringIO breaking change for str subclasses

3.14bugs and security fixesbugs and security fixes

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

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

topic-IO

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

Status: Open.

#149046 In python/cpython;

· KowalskiThomas opened on Apr 27, 2026