Security Bulletin:IDNA for Python Vulnerability: Resource Consumption and Denial-of-Service Risk with Long Inputs

Summary Internationalized Domain Names in Applications IDNA for Python provides support for Internationalized Domain Names in Applications IDNA and Unicode IDNA Compatibility Processing. In versions prior to 3.15, payloads such as "\u0660" N or "\u30fb" N + "\u6f22" utilize the validcontexto...

Exploit for CVE-2026-21016

--- CVE-2026-21016 – Malicious PyPI Package Install Hook se...

[SECURITY] Fedora 44 Update: python-nh3-0.3.6-4.fc44

Python binding to Ammonia HTML sanitizer Rust crate...

1m-handshake (>=0.1.3, <=0.1.6), 360solutions-bc-mcp (>=0.5.3, <=0.5.6) +3533 more potentially affected by CVE-2026-69247 via cryptography (>=44.0.0, <=49.0.0)

cryptography PYPI version =44.0.0, =0.1.3, =0.5.3, =2.3.0, =0.1.0, =0.1.1, =2.4.15, =0.45.0.dev1, =0.46.2 and more Source cves: CVE-2026-69247 Source advisory: SNYK:PYTHON-CRYPTOGRAPHY-18516621...

PT-2026-73547

TuxCare rebuilt python-multipart to address 1 CVE. Fixed in 0.0.6.post1+tuxcare...

PT-2026-75194

TuxCare rebuilt python-multipart to address 1 CVE. Fixed in 0.0.6.post4+tuxcare...

CVE-2026-70491: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

CVE-2026-67195: Improper Neutralization of Directives in Dynamically Evaluated Code

Perspective 5.0.0 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary operating system commands by submitting crafted expression strings to the PolarsVirtualServer backend, which passes client-supplied input directly to Python's eval with only...

RHEL 8 : python3 (RHSA-2026:50064)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:50064 advisory. Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic da...

RHEL 8 : python3 (RHSA-2026:50065)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:50065 advisory. Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic da...

Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2026-1995)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1995 advisory. The incremental HTML parser html.parser.HTMLParser allows for CPUdenial-of-service through repeated unterminated markup declarations whenprocessing uncontrolled data. CVE-2026-15308 In the...

Amazon Linux 2023 : python3.13, python3.13-devel, python3.13-freethreading (ALAS2023-2026-1997)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1997 advisory. The incremental HTML parser html.parser.HTMLParser allows for CPUdenial-of-service through repeated unterminated markup declarations whenprocessing uncontrolled data. CVE-2026-15308 In the...

Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2026-1998)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1998 advisory. CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. CVE-2026-1502 The incremental HTML parser html.parser.HTMLParser allows for CPUdenial-of-service through repeated...

Amazon Linux 2023 : python3.14, python3.14-devel, python3.14-freethreading (ALAS2023-2026-1999)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1999 advisory. When using the configparser module to write configuration filescontaining multi-line text values with carriage return characters \r theresulting file could be injected with unexpected keys and...

Amazon Linux 2 : python, --advisory ALAS2-2026-3845 (ALAS-2026-3845)

The version of python installed on the remote host is prior to 2.7.18-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3845 advisory. CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. CVE-2026-1502 The incremental HTML parser...

Amazon Linux 2 : python3, --advisory ALAS2-2026-3852 (ALAS-2026-3852)

The version of python3 installed on the remote host is prior to 3.7.16-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3852 advisory. CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. CVE-2026-1502 The incremental HTML parser...

Important: python

Issue Overview: CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. CVE-2026-1502 The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data. CVE-2026-15308 When...

Important: python3

Issue Overview: CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. CVE-2026-1502 The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data. CVE-2026-15308 When...

Important: python3.9

Issue Overview: The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data. CVE-2026-15308 In the Tarfile.extract function, the filter parameter is not passed properly when extracting...

Important: python3.13

Issue Overview: The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data. CVE-2026-15308 In the Tarfile.extract function, the filter parameter is not passed properly when extracting...