CVE-2026-59645: Uncontrolled Recursion

In Bouncy Castle for Java before 1.85, OER parser recurses without depth limit on self-referential IEEE 1609.2 schema. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcutil-fips 2.0.7 2.0.X series and 2.1.7 2.1.X series...

CVE-2026-12803: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12185: Memory Allocation with Excessive Size Value

In Bouncy Castle for Java before 1.85, BKS/UBER keystore allocates from untrusted lengths before integrity check. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12816: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-59638: Improper Validation of Certificate with Host Mismatch

In Bouncy Castle for Java before 1.85, JSSE hostname verifier CN-fallback enabled by default despite documented opt-in. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bctls-fips 1.0.24 1.0.X series, 2.0.24 2.0.X series and 2.1.24...

CVE-2026-12802: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcpkix-fips 1.0.12 1.0.X series, 2.0.12 2.0.X series and 2.1.12 2.1.X series...

PT-2026-67017

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Description An issue exists in the IESEngine where a MAC forgery is possible in stream-mode due to a length-dependent KDF split. KDF refers to a...

CVE-2026-59640: Observable Discrepancy

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcpg-fips 1.0.13 1.0.X series, 2.0.13 2.0.X series and 2.1.13 2.1.X series...

PT-2026-67237

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Description The MLS hash-ratchet mechanism accepts an arbitrary 32-bit generation counter provided by the sender. A hash-ratchet is a cryptographic process used to derive new keys for each message ...

PT-2026-67238

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Bouncy Castle for Java FIPS BC-FJA bcutil-fips versions prior to 2.0.7 Bouncy Castle for Java FIPS BC-FJA bcutil-fips versions prior to 2.1.7...

PT-2026-67241

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Bouncy Castle for Java FIPS BC-FJA bcpg-fips versions prior to 1.0.13 Bouncy Castle for Java FIPS BC-FJA bcpg-fips versions prior to 2.0.13 Boun...

PT-2026-67239

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Bouncy Castle for Java FIPS BC-FJA bctls-fips versions prior to 1.0.24 Bouncy Castle for Java FIPS BC-FJA bctls-fips versions prior to 2.0.24...

PT-2026-67243

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Description The MTI/A0 DH agreement exponentiates an unvalidated peer value. Diffie-Hellman DH is a method of securely exchanging cryptographic...

CVE-2026-59639: Improper Verification of Cryptographic Signature

In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcpkix-fips 1.0.12 1.0.X series, 2.0.12 2.0.X series and 2.1.12 2.1.X series...

CVE-2026-59651: Inadequate Encryption Strength

In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-59643: Improper Verification of Cryptographic Signature

In Bouncy Castle for Java before 1.85, OpenPGP inline-signature policy failures silently ignored. This issue also affects Bouncy Castle for Java FIPS BC-FJA before bcpg-fips 2.0.13...

CVE-2026-59644: Excessive Iteration

In Bouncy Castle for Java before 1.85, MLS hash-ratchet honours arbitrary 32-bit generation counter from sender...

CVE-2026-58061: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bc-fips 1.0.2.7 1.0.X series, 2.0.2 2.0.X series and 2.1.3 2.1.X series...

Linux Distros Unpatched Vulnerability : CVE-2026-59640

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS...

Linux Distros Unpatched Vulnerability : CVE-2026-13586

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Bouncy Castle for Java before 1.85, PKCS12 MAC and bag-decryption KDF iteration-count bound DoS. This issue also affects Bouncy Castle for Java LTS before...