What’s Vulnerable › Vulnerabilities

CVE-2023-52323

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-05 · updated 2026-06-17
• Weakness: CWE-203

Description

PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack.

Affected products

• Pycryptodome: before 3.19.1 — fixed in 3.19.1
• Pycryptodomex: before 3.19.1 — fixed in 3.19.1

How to fix

Upgrade to a fixed version: Pycryptodome 3.19.1; Pycryptodomex 3.19.1. Check the vendor advisory for mitigations.

References

• https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst
• https://pypi.org/project/pycryptodomex/#history
• https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst
• https://pypi.org/project/pycryptodomex/#history

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