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).

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2153 advisory.

    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-2026-12803)

    In Bouncy Castle for Java before 1.85, Lazy ASN.1 sequence forcing resets nesting-depth guard. 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-2026-13506)

    In Bouncy Castle for Java before 1.85, Possible OOM from unbounded up-front allocation on a definite-     length read. 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), and     before bctls-fips 1.0.24. (CVE-2026-14682)

    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-2026-58059)

    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-2026-58060)

    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-2026-58061)

    In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked     certificate. 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-2026-58062)

    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-2026-59638)

    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-2026-59639)

    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-2026-59641)

    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-2026-59642)

    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-2026-59645)

    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-2026-59646)

    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-2026-59649)

    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-2026-59650)

    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-2026-8763)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3559-1 advisory.

    - CVE-2026-8763: Name Constraints bypass via trailing dot in rfc822Name and URI (bsc#1272700).
    - CVE-2026-12185: BKS/UBER keystore allocates from untrusted lengths before integrity check (bsc#1272701).
    - CVE-2026-12802: CMS AuthEnvelopedData fails to enforce tag-length on decryption (bsc#1272702).
    - CVE-2026-12803: KCCMBlockCipher MAC does not bind nonce when AAD is absent (bsc#1272703).
    - CVE-2026-12816: IESEngine stream-mode MAC forgery via length-dependent KDF split (bsc#1272704).
    - CVE-2026-12817: OpenPGP AEAD decryption skips final tag on chunk-aligned data (bsc#1272705).
    - CVE-2026-12852: MLS wire decoder allocates attacker-declared opaque length before bounds check     (bsc#1272707).
    - CVE-2026-12860: RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path (bsc#1272708).
    - CVE-2026-13506: Lazy ASN.1 sequence forcing resets nesting-depth guard (bsc#1272709).
    - CVE-2026-13586: PKCS#12 MAC and bag-decryption KDF iteration-count bound (bsc#1272710).
    - CVE-2026-14682: Possible OOM from unbounded up-front allocation on a definite-length read (bsc#1272711).
    - CVE-2026-15055: PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input (bsc#1272712).
    - CVE-2026-58059: Quadratic-time escaping when stringifying X.500 distinguished names (bsc#1272713).
    - CVE-2026-58060: HSS public-key level count unbounded, enabling huge allocation on verify (bsc#1272714).
    - CVE-2026-58061: CCM-family modes write plaintext to caller buffer before tag check (bsc#1272715).
    - CVE-2026-58062: Stapled OCSP response accepted without binding to the checked certificate (bsc#1272716).
    - CVE-2026-58063: BCFKS keystore load honours unbounded KDF cost from untrusted file (bsc#1272717).
    - CVE-2026-59638: JSSE hostname verifier CN-fallback enabled by default despite documented opt-in     (bsc#1272718).
    - CVE-2026-59639: CMS verifySignatures returns true for SignedData with zero signers (bsc#1272719).
    - CVE-2026-59640: OpenPGP CFB quick-check oracle active on symmetric/session-key paths (bsc#1272720).
    - CVE-2026-59641: S/MIME validator trusts signer-asserted signingTime for path validation (bsc#1272721).
    - CVE-2026-59642: CMS AuthenticatedData content not bound to MAC when authAttrs present (bsc#1272722).
    - CVE-2026-59643: OpenPGP inline-signature policy failures silently ignored (bsc#1272723).
    - CVE-2026-59644: MLS hash-ratchet honours arbitrary 32-bit generation counter from sender (bsc#1272724).
    - CVE-2026-59645: OER parser recurses without depth limit on self-referential IEEE 1609.2 schema     (bsc#1272725).
    - CVE-2026-59646: DTLS handshake reassembler allocates buffer from unchecked 24-bit length (bsc#1272726).
    - CVE-2026-59647: CRMF/CMP password-MAC honours unbounded iteration count (bsc#1272727).
    - CVE-2026-59648: OpenPGP Argon2 S2K honours attacker-chosen memory and passes (bsc#1272728).
    - CVE-2026-59649: OpenPGP user-attribute subpacket length bounded only by JVM max memory (bsc#1272729).
    - CVE-2026-59650: MTI/A0 DH agreement exponentiates unvalidated peer value (bsc#1272730).
    - CVE-2026-59651: BKS keystore accepts legacy version with 16-bit integrity MAC key (bsc#1272731).
    - CVE-2026-59652: LDAP filter injection in legacy jdk1.4 LDAPStoreHelper (bsc#1272732).

    Changes for bouncycastle:

    Update to 1.85:

      * Additional Notes:

      The standardised PQC algorithms ML-KEM, ML-DSA, SLH-DSA, FrodoKEM,       and CMCE have been repackaged under org.bouncycastle.crypto and       the versions under org.bouncycastle.crypto.pqc have been deprecated.
      These deprecated versions will be removed in BC 1.86.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21538-1 advisory.

    Update to 1.85.

    Security issues fixed:

    - CVE-2026-8763: Name Constraints bypass via trailing dot in rfc822Name and URI (bsc#1272700).
    - CVE-2026-12185: BKS/UBER keystore allocates from untrusted lengths before integrity check (bsc#1272701).
    - CVE-2026-12802: CMS AuthEnvelopedData fails to enforce tag-length on decryption (bsc#1272702).
    - CVE-2026-12803: KCCMBlockCipher MAC does not bind nonce when AAD is absent (bsc#1272703).
    - CVE-2026-12816: IESEngine stream-mode MAC forgery via length-dependent KDF split (bsc#1272704).
    - CVE-2026-12817: OpenPGP AEAD decryption skips final tag on chunk-aligned data (bsc#1272705).
    - CVE-2026-12852: MLS wire decoder allocates attacker-declared opaque length before bounds check     (bsc#1272707).
    - CVE-2026-12860: RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path (bsc#1272708).
    - CVE-2026-13506: Lazy ASN.1 sequence forcing resets nesting-depth guard (bsc#1272709).
    - CVE-2026-13586: PKCS#12 MAC and bag-decryption KDF iteration-count bound (bsc#1272710).
    - CVE-2026-14682: Possible OOM from unbounded up-front allocation on a definite-length read (bsc#1272711).
    - CVE-2026-15055: PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input (bsc#1272712).
    - CVE-2026-58059: Quadratic-time escaping when stringifying X.500 distinguished names (bsc#1272713).
    - CVE-2026-58060: HSS public-key level count unbounded, enabling huge allocation on verify (bsc#1272714).
    - CVE-2026-58061: CCM-family modes write plaintext to caller buffer before tag check (bsc#1272715).
    - CVE-2026-58062: Stapled OCSP response accepted without binding to the checked certificate (bsc#1272716).
    - CVE-2026-58063: BCFKS keystore load honours unbounded KDF cost from untrusted file (bsc#1272717).
    - CVE-2026-59638: JSSE hostname verifier CN-fallback enabled by default despite documented opt-in     (bsc#1272718).
    - CVE-2026-59639: CMS verifySignatures returns true for SignedData with zero signers (bsc#1272719).
    - CVE-2026-59640: OpenPGP CFB quick-check oracle active on symmetric/session-key paths (bsc#1272720).
    - CVE-2026-59641: S/MIME validator trusts signer-asserted signingTime for path validation (bsc#1272721).
    - CVE-2026-59642: CMS AuthenticatedData content not bound to MAC when authAttrs present (bsc#1272722).
    - CVE-2026-59643: OpenPGP inline-signature policy failures silently ignored (bsc#1272723).
    - CVE-2026-59644: MLS hash-ratchet honours arbitrary 32-bit generation counter from sender (bsc#1272724).
    - CVE-2026-59645: OER parser recurses without depth limit on self-referential IEEE 1609.2 schema     (bsc#1272725).
    - CVE-2026-59646: DTLS handshake reassembler allocates buffer from unchecked 24-bit length (bsc#1272726).
    - CVE-2026-59647: CRMF/CMP password-MAC honours unbounded iteration count (bsc#1272727).
    - CVE-2026-59648: OpenPGP Argon2 S2K honours attacker-chosen memory and passes (bsc#1272728).
    - CVE-2026-59649: OpenPGP user-attribute subpacket length bounded only by JVM max memory (bsc#1272729).
    - CVE-2026-59650: MTI/A0 DH agreement exponentiates unvalidated peer value (bsc#1272730).
    - CVE-2026-59651: BKS keystore accepts legacy version with 16-bit integrity MAC key (bsc#1272731).
    - CVE-2026-59652: LDAP filter injection in legacy jdk1.4 LDAPStoreHelper (bsc#1272732).

    Additional notes:

    - The standardised PQC algorithms ML-KEM, ML-DSA, SLH-DSA, FrodoKEM, and CMCE have been repackaged under       `org.bouncycastle.crypto` and the versions under `org.bouncycastle.crypto.pqc` have been deprecated.
    These deprecated       versions will be removed in BC 1.86.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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, 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-2026-59639)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
345808	Amazon Linux 2023 : bouncycastle, bouncycastle-javadoc, bouncycastle-mail (ALAS2023-2026-2153)	Nessus	Amazon Linux Local Security Checks	Local	critical
334719	SUSE SLED15: bouncycastle / bouncycastle-pg / bouncycastle-pkix / etc (SUSE-SU-2026:3559-1)	Nessus	SuSE Local Security Checks	Local	critical
333511	openSUSE 16: bouncycastle / bouncycastle-javadoc / bouncycastle-jmail / etc (openSUSE-SU-2026:21538-1)	Nessus	SuSE Local Security Checks	Local	critical
331777	Linux Distros Unpatched Vulnerability : CVE-2026-59639	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-59639

high

Tenable Plugins

critical

critical

critical

high