CVE-2026-64847

A flaw was found in AnyIO. Untrusted or faulty worker code can write a large amount of data to the standard error stderr stream. This data fills a pipe that the parent process fails to drain, causing the process-pool call to block indefinitely. This can lead to a Denial of Service DoS condition,...

CVE-2026-63349

A flaw was found in AnyIO. When launching child processes using anyio.openprocess, the extragroups argument is incorrectly handled. This can allow a less-privileged child process to retain the supplementary groups of its parent, potentially leading to unintended privilege retention. This issue...

CVE-2026-63374

AnyIO (a Python asynchronous networking framework) is vulnerable to TLS certificate spoofing prior to version 4.14.2 . The functions connect_tcp() and TLSStream.wrap() validate internationalized (non-ASCII) domain names using the Python standard library's IDNA 2003 encoding instead of the more ac...

CVE-2026-63374

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, connecttcp and TLSStream.wrap can validate internationalized host names after the standard library converts them with IDNA 2003 instead of IDNA 2008. When a...

CLSA-2026-1790063936 TuxCare security update for anyio (2 CVEs)

TuxCare rebuilt anyio to address 2 CVEs. Fixed in 3.7.1.post2+tuxcare...

CVE-2026-64847 vulnerabilities

Vulnerabilities for packages: py3.14-anyio, kserve...

CVE-2026-63374 vulnerabilities

Vulnerabilities for packages: py3.14-anyio, kserve...

GHSA-82R6-8W77-94W6 vulnerabilities

Vulnerabilities for packages: py3.14-anyio, kserve...

GHSA-5P39-CFHJ-2XMP vulnerabilities

Vulnerabilities for packages: py3.14-anyio, kserve...

ROOT-APP-PYPI-CVE-2026-63349 CVE-2026-63349 in anyio - Patched by Root

Root has patched CVE-2026-63349 in the anyio package for Root:PyPI. Multiple fixed versions available...

UBUNTU-CVE-2026-64847

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three...

Linux Distros Unpatched Vulnerability : CVE-2026-63374

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing CVE-2026-63374 Note that Nessus relies on the presence of the package a...

UBUNTU-CVE-2026-63349

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. In 4.14.0, AnyIO accepts the POSIX extragroups argument in anyio.runprocess and anyio.openprocess, but openprocess forwards the group argument to the backend instead of extragroups...

Linux Distros Unpatched Vulnerability : CVE-2026-63349

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. In 4.14.0, AnyIO accepts the POSIX...

Linux Distros Unpatched Vulnerability : CVE-2026-64847

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool...

DEBIAN-CVE-2026-64847

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three...

CVE-2026-64847

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three...

CVE-2026-64847

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three...

Incorrect Privilege Assignment

Overview anyio is a High level compatibility layer for multiple asynchronous event loop implementations Affected versions of this package are vulnerable to Incorrect Privilege Assignment via the openprocess function in src/anyio/core/subprocesses.py, where the extragroups parameter is silently...

GHSA-3W57-8XMC-8V26 AnyIO run_process/open_process ignores extra_groups and can retain parent supplementary groups

AnyIO 4.14.0 accepts the POSIX extragroups argument on anyio.runprocess and anyio.openprocess, but openprocess forwards the wrong variable to the backend: when extragroups is not None, it assigns kwargs"extragroups" = group instead of extragroups. As a result, callers cannot reliably clear or set...