VULNERABILITY INTELLIGENCE

CVE-2021-3426

CVSS score5.7 MEDIUM
EPSS probability1.88%
CISA KEVNot currently listed
Published2021-05-20
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7.

Weakness classification

  • secalert@redhat.com: CWE-200
  • nvd@nist.gov: CWE-22

Primary references