November 13, 2026

CVE Watchtower

CVE-2026-19552Python Software Foundation CPython

NVD

Vulnerability Summary

When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.
Severity Level
NONE
Published Date
Nov 9, 2026
Last Modified
Nov 12, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.30%Probability
Root Weakness (CWE)
N/A
CVSS v4.0 Base Metrics — Score 0.0 (NONE)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)None
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • Python Software Foundation CPython < 3.16.0a2
Patched Versions
  • Python Software Foundation CPython 3.16.0a2

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run Python Software Foundation CPython and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 9, 2026Published
  • Nov 12, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 19:14 UTC