PYSEC-2026-1811 PyCryptodome and pycryptodomex side-channel leakage for OAEP decryption

PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack...

bc-java: BouncyCastle vulnerable to a timing variant of Bleichenbacher (Marvin Attack)

A flaw was found in the Bouncy Castle Java cryptography APIs. Affected versions of the org.bouncycastle:bcprov-jdk18on package are vulnerable to Observable Timing Discrepancy via the PKCS1 1.5 and OAEP decryption process a.k.a. Marvin Attack. An attacker can recover cipher-texts via a side-channe...