bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix. The PKIX draft CompositeVerifier implementation improperly accepts an empty signature sequence as a valid cryptographic signature. This issue allows a remote attacker to bypass signature verification mechanisms, potentially...

Important: Red Hat Security Advisory: Red Hat build of Quarkus 3.20.6.SP1 security update

An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability. For more informatio...

OPENSUSE-SU-2026:20627-1 Security update for bouncycastle

This update for bouncycastle fixes the following issues: - Update to version 1.84: - CVE-2025-14813: GOSTCTR implementation unable to process more than 255 blocks correctly bsc1262225. - CVE-2026-0636: LDAP Injection Vulnerability in LDAPStoreHelper.java bsc1262226. - CVE-2026-3505: Unbounded PGP...

Bouncy Castle Crypto Package For Java: Use of a Broken or Risky Cryptographic Algorithm vulnerability in bcpkix modules

: Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules. PKIX draft CompositeVerifier accepts empty signature sequence as valid. This issue affects BC-JAVA: from 1.49 before 1.84...

DEBIAN-CVE-2026-5588

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

CVE-2026-5588

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the verifybyte expected function in JcaContentVerifierProviderBuilder. An attacker can forge a protected CMP/PKI message by supplying an empty composite signature sequence that...

CVE-2026-5588

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

CVE-2026-5588 PKIX draft CompositeVerifier accepts empty signature sequence as valid.

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

CVE-2026-5588 PKIX draft CompositeVerifier accepts empty signature sequence as valid.

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

CVE-2026-5588

Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all pkix modules, Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All pkix modules, Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All pkix modules. This vulnerability...

PT-2026-33031

Name of the Vulnerable Software and Affected Versions BC-JAVA versions 1.49 through 1.83 BCPKIX-FIPS versions 2.0.6 through 2.0.10 BCPKIX-FIPS versions 2.1.7 through 2.1.10 Description The PKIX draft CompositeVerifier accepts an empty signature sequence as valid. This issue is associated with the...

Bouncy Castle Java 安全漏洞

Bouncy Castle Java is an open-source encryption algorithm developed by Legion of the Bouncy Castle Inc. Versions of Bouncy Castle Java from 1.49 to 1.84 contained security vulnerabilities. These vulnerabilities were due to the use of defective encryption algorithms, which could allow empty...

Improper Signature Verification

Authlib is vulnerable to improper signature verification. The vulnerability is due to improper validation of JWT tokens where tokens with alg: none and an empty signature bypass the signature verification process, which allows an attacker to forge authentication tokens and gain unauthorized acces...

GHSA-7WC2-QXGW-G8GG Authlib: Setting `alg: none` and a blank signature appears to bypass signature verification

Summary After upgrading the library from 1.5.2 to 1.6.0 and the latest 1.6.5 it was noticed that previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was...