pyasn1-0.6.3-py3-none-any.whl: 3 vulnerabilities (highest severity is: 7.5)

[mend-bolt-for-github]

Vulnerable Library - pyasn1-0.6.3-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/5d/a0/7d793dce3fa811fe047d6ae2431c672364b462850c6235ae306c0efd025f/pyasn1-0.6.3-py3-none-any.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/25/pyasn1-0.6.3-py3-none-any.whl

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (pyasn1 version)	Remediation Possible**
CVE-2026-59886	High	7.5	pyasn1-0.6.3-py3-none-any.whl	Direct	0.6.4	❌
CVE-2026-59885	High	7.5	pyasn1-0.6.3-py3-none-any.whl	Direct	0.6.4	❌
CVE-2026-59884	High	7.5	pyasn1-0.6.3-py3-none-any.whl	Direct	0.6.4	❌

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

Details

CVE-2026-59886

Vulnerable Library - pyasn1-0.6.3-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/5d/a0/7d793dce3fa811fe047d6ae2431c672364b462850c6235ae306c0efd025f/pyasn1-0.6.3-py3-none-any.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/25/pyasn1-0.6.3-py3-none-any.whl

Dependency Hierarchy:

• ❌ pyasn1-0.6.3-py3-none-any.whl (Vulnerable Library)

Found in base branch: main

Vulnerability Details

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded objects. This issue is fixed in version 0.6.4.

Publish Date: 2026-07-14

URL: CVE-2026-59886

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

Origin: GHSA-hm4w-wwcw-mr6r

Release Date: 2026-07-14

Fix Resolution: 0.6.4

Step up your Open Source Security Game with Mend here

CVE-2026-59885

Vulnerable Library - pyasn1-0.6.3-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/5d/a0/7d793dce3fa811fe047d6ae2431c672364b462850c6235ae306c0efd025f/pyasn1-0.6.3-py3-none-any.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/25/pyasn1-0.6.3-py3-none-any.whl

Dependency Hierarchy:

• ❌ pyasn1-0.6.3-py3-none-any.whl (Vulnerable Library)

Found in base branch: main

Vulnerability Details

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.

Publish Date: 2026-07-14

URL: CVE-2026-59885

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

Origin: GHSA-8ppf-4f7h-5ppj

Release Date: 2026-07-14

Fix Resolution: 0.6.4

Step up your Open Source Security Game with Mend here

CVE-2026-59884

Vulnerable Library - pyasn1-0.6.3-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/5d/a0/7d793dce3fa811fe047d6ae2431c672364b462850c6235ae306c0efd025f/pyasn1-0.6.3-py3-none-any.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/25/pyasn1-0.6.3-py3-none-any.whl

Dependency Hierarchy:

• ❌ pyasn1-0.6.3-py3-none-any.whl (Vulnerable Library)

Found in base branch: main

Vulnerability Details

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with CPU cost growing quadratically and to trigger unhandled ValueError exceptions in Python 3.11+ error formatting paths. Any application decoding untrusted BER, CER, or DER input is affected. This issue is fixed in version 0.6.4.

Publish Date: 2026-07-14

URL: CVE-2026-59884

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

Origin: GHSA-m4p7-r5rc-7g4j

Release Date: 2026-07-14

Fix Resolution: 0.6.4

Step up your Open Source Security Game with Mend here