SB20261109233 - Anolis OS update for python-pyasn1

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Main Vulnerability Database SB20261109233

SB20261109233 - Anolis OS update for python-pyasn1

Published: November 9, 2026

Security Bulletin ID SB20261109233
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-59886)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an unauthenticated remote attacker to cause denial of service by exhausting CPU and memory in applications using pyasn1.

The vulnerability exists due to exact big-integer exponentiation during float conversion of ASN.1 REAL values with large exponents, triggered by operations on decoded objects rather than decoding alone. An unauthenticated remote attacker can supply a compact encoded REAL value that hangs the process when the application prints or compares it.


Remediation

Install update from vendor's website.

References