It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA
access.redhat.com/errata/RHSA-2020:5634
access.redhat.com/errata/RHSA-2021:0637
access.redhat.com/errata/RHSA-2022:1716
access.redhat.com/security/cve/CVE-2020-25658
bugzilla.redhat.com/show_bug.cgi?id=1889972
bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25658
github.com/sybrenstuvel/python-rsa
github.com/sybrenstuvel/python-rsa/commit/dae8ce0d85478e16f2368b2341632775313d41ed
github.com/sybrenstuvel/python-rsa/issues/165
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nvd.nist.gov/vuln/detail/CVE-2020-25658