Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in LeafNode.verify in org.bouncycastle.mls.codec, which never checks that the subject public key of the X.509 credential's end entity certificate matches the leaf's signaturekey field, although RFC 9420...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the org.bouncycastle.openpgp.api streaming decryption path and the AEAD decryption streams. An attacker can cause decrypted plaintext to be accepted without an error, or have following...

UBUNTU-CVE-2026-71885

In Bouncy Castle for Java before 1.86, the Messaging Layer Security MLS, RFC 9420 implementation did not bind an X.509 credential to a LeafNode's signaturekey. LeafNode.verify checked a leaf's signature against the signaturekey carried in the leaf itself, while the credential's X.509 certificate...

CVE-2026-71885

In Bouncy Castle for Java before 1.86, the Messaging Layer Security MLS, RFC 9420 implementation did not bind an X.509 credential to a LeafNode's signaturekey. LeafNode.verify checked a leaf's signature against the signaturekey carried in the leaf itself, while the credential's X.509 certificate...

CVE-2026-63578

Allocation of resources without limits in password-based private-key decryption PbeUtilities.GenerateCipherParameters in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply an encrypted private key, such as a PKCS8 EncryptedPrivateKeyInfo or "ENCRYPTED PRIVAT...

CVE-2026-103601

Release of unverified plaintext in the CCM CcmBlockCipher and DSTU 7624 CCM KCcmBlockCipher AEAD modes in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker to obtain decryptions of ciphertexts of their choosing via forged messages sent to an application that lets th...

CVE-2026-103601

The bc-csharp library by Legion of the Bouncy Castle Inc. (versions before 2.7.0 ) is vulnerable to an issue where unverified plaintext is released in the CCM (CcmBlockCipher ) and DSTU 7624 CCM (KCcmBlockCipher ) AEAD modes. The root cause is that the decryption process writes recovered plaintex...

CVE-2026-103601 CcmBlockCipher and KCcmBlockCipher leave unverified plaintext in the output buffer after a failed tag check

Release of unverified plaintext in the CCM CcmBlockCipher and DSTU 7624 CCM KCcmBlockCipher AEAD modes in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker to obtain decryptions of ciphertexts of their choosing via forged messages sent to an application that lets th...

CVE-2026-63578

Allocation of resources without limits in password-based private-key decryption PbeUtilities.GenerateCipherParameters in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply an encrypted private key, such as a PKCS8 EncryptedPrivateKeyInfo or "ENCRYPTED PRIVAT...

EUVD-2026-91229

Allocation of resources without limits in password-based private-key decryption PbeUtilities.GenerateCipherParameters in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply an encrypted private key, such as a PKCS8 EncryptedPrivateKeyInfo or "ENCRYPTED PRIVAT...

CVE-2026-63578

The bc-csharp library (versions before 2.7.0 ) by Legion of the Bouncy Castle Inc. is vulnerable to a denial of service via CPU exhaustion in the PbeUtilities.GenerateCipherParameters function. This is caused by the allocation of resources without limits during password-based private-key decrypti...

PT-2026-104132

Observable discrepancy in the CMS RSA PKCS1 v1.5 key-transport unwrap KeyTransRecipientInformation.UnwrapKey in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who holds a captured CMS EnvelopedData message, and who can submit many modified messages to an...

PT-2026-104137

🚨 CVE-2026-63578 Allocation of resources without limits in password-based private-key decryption PbeUtilities.GenerateCipherParameters in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply an encrypted private key, such as a PKCS8 EncryptedPrivateKeyInfo or...

CVE-2026-103601: Improper Validation of Integrity Check Value

Release of unverified plaintext in the CCM CcmBlockCipher and DSTU 7624 CCM KCcmBlockCipher AEAD modes in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker to obtain decryptions of ciphertexts of their choosing via forged messages sent to an application that lets th...