Vigie VulnDBEuropean-hosted Vulnerability DB

CVE-2021-3426

At a glance

Severity
MEDIUM 5.7
EPSS
EPSS 1.88 % · percentile 79 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Modified

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.

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.7CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NCISA-ADP
CVSS 3.1MEDIUM 5.7CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NNVD · nvd@nist.gov (Primary)
CVSS 3.1MEDIUM 5.7CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0LOW 2.7AV:A/AC:L/Au:S/C:P/I:N/A:NNVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
pythonaffected python 3.8.9, python 3.9.3, python 3.10.0a7

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD