Security Bulletin: TSSC/IMC addresses multiple security vulnerabilities in Bouncy Castle for Java

Summary TSSC/IMC addresses multiple security vulnerabilities, listed in the CVEs below. Vulnerability Details CVEID:CVE-2026-12185 DESCRIPTION: In Bouncy Castle for Java before 1.85, BKS/UBER keystore allocates from untrusted lengths before integrity check. This issue also affects Bouncy Castle f...

CLEANSTART-2026-KK18805 In Bouncy Castle for Java before 1

CVE-2026-58059 affects multiple packages. In Bouncy Castle for Java before 1. See references for individual vulnerability details...

CLEANSTART-2026-YC34424 In Bouncy Castle for Java before 1

CVE-2026-8763 affects multiple packages. In Bouncy Castle for Java before 1. See references for individual vulnerability details...

Security Bulletin: Security vulnerabilities have been identified in third party libraries shipped with IBM Guardium Cryptography Manager (GCM)

Summary Security vulnerabilities identified in the third party libraries shipped with IBM Guardium Cryptography Manager GCM have been addressed. Vulnerability Details CVEID:CVE-2026-12817 DESCRIPTION: In Bouncy Castle for Java before 1.85, OpenPGP AEAD decryption skips final tag on chunk-aligned...

Security Bulletin: Security vulnerabilities have been identified in third party libraries shipped with IBM Guardium Cryptography Manager (GCM)

Summary Security vulnerabilities identified in the third party libraries shipped with IBM Guardium Cryptography Manager GCM have been addressed. Vulnerability Details CVEID:CVE-2026-59901 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to versions...

Atlassian Confluence 8.9.x < 9.2.24 / 9.3.x < 10.2.17 (CONFSERVER-104434)

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-104434 advisory. - 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...

org.bouncycastle/bc-java: org.bouncycastle/bc-lts-java: Bouncy Castle for Java: Cryptographic signature bypass in RSA PKCS#1 verification

A flaw was found in Bouncy Castle for Java. During the RSA PKCS1 verification process, the last two hash bytes are incorrectly skipped when a NULL-omitted path is utilized. This vulnerability could allow an attacker to bypass cryptographic signature verification, potentially leading to the...

org.bouncycastle/bc-java: Bouncy Castle for Java: Denial of Service via quadratic-time escaping of X.500 distinguished names

A flaw was found in Bouncy Castle for Java. A remote, unauthenticated attacker could exploit a quadratic-time escaping vulnerability when stringifying X.500 distinguished names. This could lead to a Denial of Service DoS due to excessive resource consumption...

CVE-2026-13505

A flaw was found in Bouncy Castle for Java FIPS BC-FJA. Sensitive cryptographic key material, intended to be securely erased from memory zeroised upon garbage collection, may persist longer than expected. This occurs because the zeroisation process relies on a deprecated Java finalization...

Security Bulletin: IBM Sterling Secure Proxy is affected by multiple vulnerabilities in Bouncy Castle for Java FIPS

Summary IBM Sterling Secure Proxy is affected by multiple vulnerabilities CVE-2026-13505, CVE-2026-9563 in Bouncy Castle for Java FIPS and are addressed in version 6.2.1.3. Vulnerability Details CVEID:CVE-2026-13505 DESCRIPTION: In Bouncy Castle for Java FIPS BC-FJA before bc-fips 1.0.2.7 1.0.X...

CVE-2026-12816

A flaw was found in Bouncy Castle for Java. This vulnerability allows for Message Authentication Code MAC forgery in the IESEngine stream-mode. The issue arises from a length-dependent Key Derivation Function KDF split, which an attacker could exploit to bypass integrity checks. This could lead t...

CVE-2026-12803

A flaw was found in Bouncy Castle for Java. The cryptographic module responsible for authenticated encryption does not correctly link a unique random value nonce with the message authentication code when no additional authenticated data is provided. This oversight could allow an attacker to forge...

org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length

A flaw was found in Bouncy Castle for Java. The software's processing of OpenPGP user-attribute subpackets does not properly limit their length, bounding them only by the Java Virtual Machine JVM maximum memory. A remote attacker could exploit this by sending a specially crafted OpenPGP message,...

org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length

A flaw was found in Bouncy Castle for Java. The software's processing of OpenPGP user-attribute subpackets does not properly limit their length, bounding them only by the Java Virtual Machine JVM maximum memory. A remote attacker could exploit this by sending a specially crafted OpenPGP message,...

org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length

A flaw was found in Bouncy Castle for Java. The software's processing of OpenPGP user-attribute subpackets does not properly limit their length, bounding them only by the Java Virtual Machine JVM maximum memory. A remote attacker could exploit this by sending a specially crafted OpenPGP message,...

Atlassian Jira Service Management Data Center and Server 10.0.x < 10.3.25 / 10.4.x < 11.3.11 (JSDSERVER-16751)

The version of Atlassian Jira Service Management Data Center and Server Jira Service Desk running on the remote host is affected by a vulnerability as referenced in the JSDSERVER-16751 advisory. - In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and UR...

GHSA-V6W3-QRH8-QCCC Bouncy Castle: the native entropy source used on Intel platforms retried the CPU entropy instructions without any bound

In Bouncy Castle for Java FIPS BC-FJA before bc-fips 2.1.3, the native entropy source used on Intel platforms retried the CPU entropy instructions without any bound. RDSEED and RDRAND report failure through their carry flag, and the JNI seeding routine spun re-issuing the instruction for as long ...

GHSA-98J2-6V39-78W8 Bouncy Castle: Zeroisation of sensitive key material on garbage collection relies on finalization.

In 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, sensitive key material held by the AES and DESede engines, the SP 800-90A DRBGs, SymmetricSecretKey and the PBKD and scrypt parameter classes was zeroised on garbage collection by...

Bouncy Castle: the native entropy source used on Intel platforms retried the CPU entropy instructions without any bound

In Bouncy Castle for Java FIPS BC-FJA before bc-fips 2.1.3, the native entropy source used on Intel platforms retried the CPU entropy instructions without any bound. RDSEED and RDRAND report failure through their carry flag, and the JNI seeding routine spun re-issuing the instruction for as long ...

Bouncy Castle: Zeroisation of sensitive key material on garbage collection relies on finalization.

In 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, sensitive key material held by the AES and DESede engines, the SP 800-90A DRBGs, SymmetricSecretKey and the PBKD and scrypt parameter classes was zeroised on garbage collection by...