Unchecked Input for Loop Condition Affecting python3-pyasn1-modules package, versions *


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.43% (37th percentile)

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  • Snyk IDSNYK-CENTOS10-PYTHON3PYASN1MODULES-22098125
  • published31 Oct 2026
  • disclosed29 Oct 2026

Introduced: 29 Oct 2026

NewCVE-2026-119197  (opens in a new tab)
CWE-606  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 python3-pyasn1-modules.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-pyasn1-modules package and not the python3-pyasn1-modules package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, binary REAL decoding builds a large mantissa one octet at a time by shifting a growing integer and slicing the remaining byte string. Attacker-controlled ASN.1 includes a binary-encoded REAL with a large mantissa and reaches BER, CER, or DER decode(), with or without a schema containing REAL. RealPayloadDecoder.valueDecoder repeatedly performs a left shift, OR, and suffix copy for every mantissa octet, making decode time quadratic in mantissa length. A comparatively small REAL value can hold a decoding worker on one CPU core for seconds or longer and cause availability loss. This issue is fixed in version 0.6.5.

CVSS Base Scores

version 3.1