CVE-2026-59885 (GCVE-0-2026-59885)
Vulnerability from cvelistv5
Published
2026-07-14 16:40
Modified
2026-07-14 17:32
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Summary
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process OBJECT IDENTIFIER and RELATIVE-OID values in quadratic time relative to the number of arcs, so a small crafted payload containing an OID with many arcs consumes excessive CPU per decode() call and can deny service to applications that decode untrusted ASN.1 data. The corresponding encoders have the same quadratic behavior when an application re-encodes previously decoded attacker-supplied values. This issue is fixed in version 0.6.4.
Impacted products
Vendor Product Version
pyasn1 pyasn1 Version: < 0.6.4
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Show details on NVD website


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