pyasn1: pyasn1 Vulnerable to Denial of Service via Unbounded Recursion

An unbounded recursion flaw has been discovered in the pypi pyasn1 library. This uncontrolled recursion occurs when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing nested SEQUENCE 0x30 or SET 0x31 tags with Indefinite Length 0x80 markers. Thi...

Medium: python-pyasn1

Issue Overview: pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the pyasn1 library is vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands o...

UBUNTU-CVE-2026-30922

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the pyasn1 library is vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested SEQUENC...

PT-2026-25973

Name of the Vulnerable Software and Affected Versions pyasn1 versions prior to 0.6.3 Description The pyasn1 library is susceptible to a Denial of Service DoS attack stemming from uncontrolled recursion when decoding ASN.1 data containing deeply nested structures. An attacker can craft a payload...

CVE-2026-45133: YAML Parser Stack Exhaustion via Unbounded Recursion in Nested Blocks, Sequences, and Mappings

More info at https://symfony.com/cve-2026-45133...