bouncycastle: BC-JAVA: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpg. A specially crafted PGP AEAD Authenticated Encryption with Associated Data message with an unbounded chunk size can lead to an excessive consumption of memory. This issue allows an unauthenticated remote attacker to cause memory...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the readBlock method of PGPAeadInputStream BcAEADUtil, mirrored in JceAEADUtil, which pre-reads the final 16 bytes but ignores the result and returns EOF without calling doFinal when the...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the readBlock method of PGPAeadInputStream BcAEADUtil, mirrored in JceAEADUtil, which pre-reads the final 16 bytes but ignores the result and returns EOF without calling doFinal when the...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the readBlock method of PGPAeadInputStream BcAEADUtil, mirrored in JceAEADUtil, which pre-reads the final 16 bytes but ignores the result and returns EOF without calling doFinal when the...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the readBlock method of PGPAeadInputStream BcAEADUtil, mirrored in JceAEADUtil, which pre-reads the final 16 bytes but ignores the result and returns EOF without calling doFinal when the...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the S2K.Argon2Params class and the PGPUtil.makeKeyFromPassPhrase method, which read the one-byte OpenPGP Argon2 passes, parallelism, and memory-size exponent fields with only a...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the readPacket method of UserAttributeSubpacketInputStream, which reads a 5-octet subpacket length up to Integer.MAXVALUE and allocates new bytebodyLen-1 after checking only against a limit...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the S2K.Argon2Params class and the PGPUtil.makeKeyFromPassPhrase method, which read the one-byte OpenPGP Argon2 passes, parallelism, and memory-size exponent fields with only a...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the S2K.Argon2Params class and the PGPUtil.makeKeyFromPassPhrase method, which read the one-byte OpenPGP Argon2 passes, parallelism, and memory-size exponent fields with only a...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the S2K.Argon2Params class and the PGPUtil.makeKeyFromPassPhrase method, which read the one-byte OpenPGP Argon2 passes, parallelism, and memory-size exponent fields with only a...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the readPacket method of UserAttributeSubpacketInputStream, which reads a 5-octet subpacket length up to Integer.MAXVALUE and allocates new bytebodyLen-1 after checking only against a limit...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the OnePassSignatures.verify method of OpenPGPMessageInputStream, whose catch PGPSignatureException block for the dataSignature.sanitizekey, policy check contains only a // continue...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the OnePassSignatures.verify method of OpenPGPMessageInputStream, whose catch PGPSignatureException block for the dataSignature.sanitizekey, policy check contains only a // continue...

CVE-2026-12817

CVE-2026-12817 affects Bouncy Castle for Java prior to 1.85, including Java LTS builds before 2.73.12 and BC-FJA before bcpg-fips 1.0.13 (1.0.x), 2.0.13 (2.0.x), and 2.1.13 (2.1.x). The flaw: OpenPGP AEAD decryption skips the final tag on chunk-aligned data, as described in multiple sources. This...