pyasn1-0.5.1-py2.py3-none-any.whl: 1 vulnerabilities (highest severity is: 7.5)

[mend-bolt-for-github]

Vulnerable Library - pyasn1-0.5.1-py2.py3-none-any.whl

Pure-Python implementation of ASN.1 types and DER/BER/CER codecs (X.208)

Library home page: https://files.pythonhosted.org/packages/d1/75/4686d2872bf2fc0b37917cbc8bbf0dd3a5cdb0990799be1b9cbf1e1eb733/pyasn1-0.5.1-py2.py3-none-any.whl

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Found in HEAD commit: 5703867cc506719d7029f4ab2cc3f15e2d4cae09

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (pyasn1 version)	Remediation Possible**
CVE-2026-23490	High	7.5	pyasn1-0.5.1-py2.py3-none-any.whl	Direct	https://github.com/pyasn1/pyasn1.git - v0.6.2	❌

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-23490

Vulnerable Library - pyasn1-0.5.1-py2.py3-none-any.whl

Pure-Python implementation of ASN.1 types and DER/BER/CER codecs (X.208)

Library home page: https://files.pythonhosted.org/packages/d1/75/4686d2872bf2fc0b37917cbc8bbf0dd3a5cdb0990799be1b9cbf1e1eb733/pyasn1-0.5.1-py2.py3-none-any.whl

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy:

• ❌ pyasn1-0.5.1-py2.py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: 5703867cc506719d7029f4ab2cc3f15e2d4cae09

Found in base branch: main

Vulnerability Details

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.

Publish Date: 2026-01-16

URL: CVE-2026-23490

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-01-16

Fix Resolution: https://github.com/pyasn1/pyasn1.git - v0.6.2

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