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Servers and applications

CVE-2022-48566

An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.

Severity
Medium 5.9
Published
22 Aug 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
3.6.13, 3.7.10, 3.8.7, 3.9.1
Sources
NVD

Affected software

SoftwareAffected versions
PythonServers and applications · cpe:a:python:python
  • Every version before 3.6.13
  • From 3.7.0 before 3.7.10
  • From 3.8.0 before 3.8.7
  • From 3.9.0 before 3.9.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2022-48566
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2022-48566