msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl: 1 vulnerabilities (highest severity is: 7.5)

[mend-bolt-for-github]

Vulnerable Library - msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

MessagePack serializer

Library home page: https://files.pythonhosted.org/packages/e5/a1/20486c29a31ec9f0f88377fdf7eb7a67f30bcb5e0f89b7550f6f16d9373b/msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/9/msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

Found in HEAD commit: 0f1cc4f79fdab9e4d90aa9caf963ea2e271c0183

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (msgpack version)	Remediation Possible**
CVE-2026-57585	High	7.5	msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl	Direct	1.2.1	❌

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

Details

CVE-2026-57585

Vulnerable Library - msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

MessagePack serializer

Library home page: https://files.pythonhosted.org/packages/e5/a1/20486c29a31ec9f0f88377fdf7eb7a67f30bcb5e0f89b7550f6f16d9373b/msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

Path to dependency file: /ai/requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260331025725_MIUFBE/python_UVEQHS/20260331025831/9/msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl

Dependency Hierarchy:

• ❌ msgpack-1.1.2-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl (Vulnerable Library)

Found in HEAD commit: 0f1cc4f79fdab9e4d90aa9caf963ea2e271c0183

Found in base branch: main

Vulnerability Details

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

Publish Date: 2026-06-30

URL: CVE-2026-57585

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: 2026-06-30

Fix Resolution: 1.2.1

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