Description

When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.

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EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://github.com/python/cpython/commit/8dde46eaa6baf5f027a7234845b20d50b509624e https://github.com/python/cpython/issues/161503 https://github.com/python/cpython/pull/161507 https://mail.python.org/archives/list/[email protected]/thread/SXBD6BGHDBTGM4KSUMQEWYIQ5RO4BQ76/ http://www.openwall.com/lists/oss-security/2026/11/09/25

Frequently Asked Questions

What is CVE-2026-19552? +

When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.

How do I check if I'm vulnerable to CVE-2026-19552? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.