CVE-2026-71892 CMS key-transport recipient key-size validation never runs for RFC 9709 HKDF-derived keys

In Bouncy Castle for Java before 1.86, the opt-in key-size validation on CMS key-transport recipients, org.bouncycastle.cms.jcajce.JceKeyTransRecipient.setKeySizeValidationtrue, never ran for a message using RFC 9709 content-encryption key derivation id-alg-cek-hkdf-sha256. The branch that should...

MGASA-2026-0091 Updated openssl packages fix security vulnerabilities

Incorrect Failure Handling in RSA KEM RSASVE Encapsulation. CVE-2026-31790 Potential Use-after-free in DANE Client Code. CVE-2026-28387 NULL Pointer Dereference When Processing a Delta CRL. CVE-2026-28388 Possible NULL Dereference When Processing CMS KeyAgreeRecipientInfo. CVE-2026-28389 Possible...

CVE-2026-28390

OpenSSL CVE-2026-28390 describes a NULL pointer dereference when processing CMS EnvelopedData with KeyTransportRecipientInfo using RSA-OAEP, triggered by missing optional RSA-OAEP parameters. The issue allows a crash/Denial of Service when untrusted CMS data is decrypted via CMS_decrypt(). Affect...

CVE-2026-28390

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denia...