PYSEC-2026-1765 Peppol-py is vulnerable to XXE attacks due to Saxon configuration

Peppol-py before 1.1.1 allows XXE attacks because of the Saxon configuration. When validating XML-based invoices, the XML parser could read files from the filesystem and expose their content to a remote host...

pypdf's LZWDecode streams be manipulated to exhaust RAM

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter.This is a follow up to GHSA-jfx9-29x2-rv3j to align the default limit with the one for zlib...

PYSEC-2026-1618 MCP Python SDK has Unhandled Exception in Streamable HTTP Transport, Leading to Denial of Service

If a client deliberately triggers an exception after establishing a streamable HTTP session, this can lead to an uncaught ClosedResourceError on the server side, causing the server to crash and requiring a restart to restore service. Impact may vary depending on the deployment conditions, and...

Transformers Regular Expression Denial of Service (ReDoS) vulnerability

A Regular Expression Denial of Service ReDoS vulnerability was identified in the huggingface/transformers library, specifically in the file tokenizationnougatfast.py. The vulnerability occurs in the postprocesssingle function, where a regular expression processes specially crafted input. The issu...

PYSEC-2026-1855 python-sql SQL injection vulnerability

A vulnerability was found in python-sql where unary operators do not escape non-Expression like And and Or which makes any system exposing those vulnerable to an SQL injection attack...

OESA-2026-2814 python-urllib3 security update

HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more. Security Fixes: urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API preloadcontent=False when using Brotli support. The issue arises due to three independent code...

python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens

A flaw was found in PyJWT, a Python library for JSON Web Token JWT implementation. When decoding JWTs, the library fails to validate the use of JSON Web Keys JWK in the HMAC algorithm while also supporting asymmetric algorithms. This allows a remote attacker to use the issuer's public key as the...

python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens

A flaw was found in PyJWT, a Python library for JSON Web Token JWT implementation. When decoding JWTs, the library fails to validate the use of JSON Web Keys JWK in the HMAC algorithm while also supporting asymmetric algorithms. This allows a remote attacker to use the issuer's public key as the...

Urllib3 HTTPConnection Unauthenticated Access

The vulnerability of the HTTPConnection.urlopen method in the Python HTTP library, Urllib3, is related to insufficient protection of sensitive data. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information...

OPENSUSE-SU-2026:11183-1 python313-joserfc-1.7.2-2.1 on GA media

These are all security issues fixed in the python313-joserfc-1.7.2-2.1 package on the GA media of openSUSE Tumbleweed...

urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers

A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via ProxyManager.connectionfromurl.urlopen with assertsamehost=False, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitiv...

LiteLLM Detection

A LiteLLM Python library is installed on the remote host. Note that Nessus has relied upon on the application's self-reported version number. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description scriptid324116; scriptversion"1.1";...

CVE-2026-57585 MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This...

PT-2026-53225

Name of the Vulnerable Software and Affected Versions mcp Python SDK versions prior to 1.27.2 Description Principal confusion exists in the HTTP transports of the mcp Python SDK. Specifically, the SSE and Streamable HTTP stateful mode routed sessions fail to verify if the principal matches the...

PT-2026-53226

Name of the Vulnerable Software and Affected Versions MCP Python SDK versions prior to 1.27.2 Description A missing authorization issue exists in the official Model Context Protocol Python SDK. On multi-client servers, the default request handlers registered by the experimental enable tasks helpe...

BIT-PYTHON-2026-9669 bz2.BZ2Decompressor reuse after error can cause a stack buffer overflow

bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer...

Astra Linux – Vulnerability in python-urllib3

urllib3 is a HTTP client library for Python. The streaming API of urllib3 is designed for efficiently handling large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. urllib3 can perform decoding or decompression based on the HTTP...

ROS-20260624-73-0045

The vulnerability in python-aiohttp is related to the lack of protection for service data. Exploiting this vulnerability can allow a remote attacker to gain unauthorized access to protected information...

PSF-2026-30

tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower...

ALSA-2026:28159 Important: python3.12-urllib3 security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...