RLSA-2026:71658 Important: python-cryptography 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:...

python-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

A flaw was found in python-cryptography. When processing invalid certificate chains that include duplicate self-signed certificates, the system recursively invokes the same certificate, leading to an exponential increase in processing time. A remote attacker could exploit this by providing a...

ALSA-2026:71658 Important: python-cryptography 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:...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

RLSA-2026:64795 Important: python3.14-cryptography 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:...

python3.14-cryptography security update

An update is available for python3.14-cryptography. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Python is an interpreted, interactive, object-oriented...

RockyLinux 9 : python3.14-cryptography (RLSA-2026:64774)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:64774 advisory. python-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building CVE-2026-69249 python-cryptography:...

MiracleLinux 9 : python3.14-cryptography-45.0.4-4.el9_8.6 (AXSA:2026-1788:01)

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-1788:01 advisory. python-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building CVE-2026-69249 python-cryptography...

Important: Red Hat Security Advisory: python3.14-cryptography security update

An update for python3.14-cryptography is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

python-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

A flaw was found in python-cryptography. When processing invalid certificate chains that include duplicate self-signed certificates, the system recursively invokes the same certificate, leading to an exponential increase in processing time. A remote attacker could exploit this by providing a...

AlmaLinux 9 : python3.14-cryptography (ALSA-2026:64774)

The remote AlmaLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:64774 advisory. python-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building CVE-2026-69249 python-cryptography:...

SUSE-SU-2026:23196-1 Security update for python-cryptography

This update for python-cryptography fixes the following issues: - CVE-2026-69248: verifier accepts wildcard DNS names allowing escape from permittedSubtrees bsc1273549. - CVE-2026-69249: duplicate self-signed intermediates can cause exponential path-building bsc1273516...

python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

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PYSEC-2026-3553 python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

Summary When resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the buildchaininner function. An attacker can cause excessive resource consumption by submitting a certificate chain containing duplicate self-signed intermediates, which lead...

GHSA-JWV3-5HGF-82WW python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

Summary When resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents...

python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

Summary When resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents...

CVE-2026-69249 python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same...

EUVD-2026-52450

python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 49.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an...

CVE-2026-69249

CVE-2026-69249 affects python-cryptography prior to 49.0.0, where resolving invalid certificate chains with duplicate self-signed intermediates can explode in recursion, causing resource exhaustion DoS. The core issue is in the recursive build_chain_inner not de-duplicating previously analyzed ca...