CVE Intelligence

Legion of the Bouncy Castle Inc. vulnerabilities

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Published CVEs affecting Legion of the Bouncy Castle Inc. products: 80 record(s), with severity, exploitation and fixes.

BC-JAVA 52BC-LTS-JAVA 35BC-FJA 31Bc-csharp 21BC-LTS 2BCPKIX-FIPS 1BCPIX-LTS 1Bouncy Castle for Java FIPS 1Bouncy Castle for Java LTS 1

Exploited only (KEV) →

CVE-2026-58061 High · 7.5 CWE-354 Aug 3, 2026
CCM-family modes write plaintext to caller buffer before tag check
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).
CVE-2026-58060 High · 7.5 CWE-789 Aug 3, 2026
HSS public-key level count unbounded, enabling huge allocation on verify
In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
CVE-2026-58059 High · 7.5 CWE-407 Aug 3, 2026
Quadratic-time escaping when stringifying X.500 distinguished names
In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names. 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).
CVE-2026-8763 Critical · 9.1 CWE-295 Aug 2, 2026
Name Constraints bypass via trailing dot in rfc822Name and URI
In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI. 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).
CVE-2026-59652 Medium · 6.5 CWE-90 Aug 2, 2026
LDAP filter injection in legacy jdk1.4 LDAPStoreHelper
In Bouncy Castle for Java before 1.85, LDAP filter injection in legacy jdk1.4 LDAPStoreHelper.
CVE-2026-59651 High · 7.5 CWE-326 Aug 2, 2026
BKS keystore accepts legacy version with 16-bit integrity MAC key
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-2026-59650 Critical · 9.1 CWE-20 Aug 2, 2026
MTI/A0 DH agreement exponentiates unvalidated peer value
In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
CVE-2026-59649 High · 7.5 CWE-789 Aug 2, 2026
OpenPGP user-attribute subpacket length bounded only by JVM max memory
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. 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).
CVE-2026-59648 Medium · 5.3 CWE-770 Aug 2, 2026
OpenPGP Argon2 S2K honours attacker-chosen memory and passes
In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes. 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).
CVE-2026-59647 Medium · 5.3 CWE-770 Aug 2, 2026
CRMF/CMP password-MAC honours unbounded iteration count
In Bouncy Castle for Java before 1.85, CRMF/CMP password-MAC honours unbounded iteration count. 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-2026-59646 High · 7.5 CWE-789 Aug 2, 2026
DTLS handshake reassembler allocates buffer from unchecked 24-bit length
In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length. 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 (2.1.X series).
CVE-2026-59645 High · 7.5 CWE-674 Aug 2, 2026
OER parser recurses without depth limit on self-referential IEEE 1609.2 schema
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-2026-59644 High · 7.5 CWE-834 Aug 2, 2026
MLS hash-ratchet honours arbitrary 32-bit generation counter from sender
In Bouncy Castle for Java before 1.85, MLS hash-ratchet honours arbitrary 32-bit generation counter from sender.
CVE-2026-59643 High · 7.5 CWE-347 Aug 2, 2026
OpenPGP inline-signature policy failures silently ignored
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-2026-59642 High · 7.5 CWE-354 Aug 2, 2026
CMS AuthenticatedData content not bound to MAC when authAttrs present
In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present. 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-2026-59641 Medium · 5.3 CWE-345 Aug 2, 2026
S/MIME validator trusts signer-asserted signingTime for path validation
In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).
CVE-2026-59640 Medium · 5.3 CWE-203 Aug 2, 2026
OpenPGP CFB quick-check oracle active on symmetric/session-key paths
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).
CVE-2026-59639 High · 7.5 CWE-347 Aug 2, 2026
CMS verifySignatures returns true for SignedData with zero signers
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-2026-59638 Medium · 6.5 CWE-297 Aug 2, 2026
JSSE hostname verifier CN-fallback enabled by default despite documented opt-in
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 (2.1.X series).
CVE-2026-15055 High · 8.2 CWE-770 Aug 2, 2026
PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input
In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. 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-2026-12185 High · 8.6 CWE-789 Aug 2, 2026
BKS/UBER keystore allocates from untrusted lengths before integrity check
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-2024-14041 Medium · 5.9 CWE-208 Jul 28, 2026
ML-KEM (Kyber) decapsulation leaks private key information through non-constant-time division in message decoding and ciphertext compression (KyberSlash)
In Bouncy Castle for Java from 1.73 to before 1.78, three ML-KEM (CRYSTALS-Kyber) routines divided secret-derived polynomial coefficients by the modulus q: Poly.toMsg, which decodes the decrypted message, and the ciphertext compression routines Poly.compressPoly and PolyVec.compressPolyVec. An attacker able to measure the timing of a large number of decapsulations performed with the same long-term private key can recover that key. These are the KyberSlash1 (Poly.toMsg) and KyberSlash2 (ciphertext compression) divisions. Compression performed during encapsulation operates on values that become the public ciphertext and is not affected.
CVE-2026-15997 Low · 1.7 CWE-787 Jul 16, 2026
Native ARM SHA3 / SHAKE `restoreFullState` fails to detect size_t underflow in a crafted encoded state
Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers. This vulnerability is associated with program files https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.C, https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.C. This issue affects BC-LTS: from 2.73.0 before 2.73.12.1. Issue is only applicable if application involved is accepting memoable SHA3 / SHAKE states from potentially untrusted sources.
CVE-2026-8149 Medium · 5.1 CWE-1068 May 8, 2026
GCM chunking can lead to bad tag exception on decryption
A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on X86_64, AVX, AVX-512f, Linux, Legion of the Bouncy Castle Inc. BC-FJA bc-fips on Linux, X86_64, AVX, AVX-512f. This vulnerability is associated with program files gcm128w, gcm512w, gcm128w.C, gcm512w.C. This issue affects BC-LTS: from 2.73.0 before 2.73.11; BC-FJA: from 2.1.0 before 2.1.3.
CVE-2026-5598 High · 7.5 CWE-385 Apr 15, 2026
Non-constant time comparisons risk private key leakage in FrodoKEM.
Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules). This vulnerability is associated with program files FrodoEngine.Java. This issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.