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PY
Product
Pyopenssl
by Pyopenssl · last CVE Mar 17, 2026
3
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Vulnerabilities3In the news0Timeline
Severity mix
Critical 1High 1Medium 1Low 0
Severity
All severities3Critical1High1Medium1Low0
Exploitation
On CISA KEV0Exploited in the wild0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-27459
9.8
1%
Mar 17
pyOpenSSL DTLS cookie callback buffer overflow
Affected: 22.0.0 before 26.0.0
CVE-2018-1000807
8.1
4%
Oct 8
Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a CWE-416: Use After Free vulnerability in X509 object handling that can result in Use after free…
Affected: before 17.5.0
CVE-2026-27448
5.3
0%
Mar 17
pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback
Affected: 0.14 before 26.0.0
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