Linux Distros Unpatched Vulnerability : CVE-2026-71885

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 1.86, the Messaging Layer Security MLS, RFC 9420 implementation did not bind an X.509 credential to a LeafNode's signaturekey...

Linux Distros Unpatched Vulnerability : CVE-2026-71887

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 1.86, the high-level OpenPGP API accepted a data signature made by a signing subkey whose Subkey Binding signature carried no...

Linux Distros Unpatched Vulnerability : CVE-2026-17507

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 1.86, the MLS implementation org.bouncycastle.mls holds RFC 9420's uint32 leafindex in a signed int, so a wire value with the t...

Linux Distros Unpatched Vulnerability : CVE-2026-71886

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 1.86, the high-level OpenPGP certificate API accepted a third-party certification or trust delegation from any component key of...

Linux Distros Unpatched Vulnerability : CVE-2026-97873

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 1.86, the raw JCA provider's legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families ran their password-based key derivation with a...

Linux Distros Unpatched Vulnerability : CVE-2026-71889

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 1.86, neither copy of PKIXCertPathReviewer - org.bouncycastle.pkix.jcajce.PKIXCertPathReviewer nor the legacy...

Linux Distros Unpatched Vulnerability : CVE-2026-71888

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 1.86, the streaming CMS AuthenticatedData parser accepted a message whose digestAlgorithm and authAttrs fields disagreed about...

Linux Distros Unpatched Vulnerability : CVE-2026-71892

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 1.86, the opt-in key-size validation on CMS key-transport recipients,...

Linux Distros Unpatched Vulnerability : CVE-2026-71891

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 1.86, BLS12381BasicScheme.keyValidate, and so BLSPublicKeyParameters and every BasicScheme, MessageAugmentation and...

Linux Distros Unpatched Vulnerability : CVE-2026-71890

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 1.86, validation of an MLS RFC 9420 external commit's proposal list,...

CVE-2026-18036

A flaw was found in Bouncy Castle. A timing side-channel vulnerability in the NTRU algorithm can lead to information disclosure. The implementation performs variable-time division operations on secret data instead of constant-time calculations, causing processing time to vary depending on the...

CVE-2026-17508

A flaw was found in Bouncy Castle. Several password-based key derivation functions KDF process cost parameters directly from untrusted input without enforcing upper bounds. An attacker can exploit this vulnerability by supplying crafted input containing excessively high cost parameters, forcing t...

CVE-2026-17507

A flaw was found in Bouncy Castle's Messaging Layer Security MLS implementation. Due to an improper signed integer comparison, an out-of-range leaf identifier incorrectly bypasses group membership checks. A group member can exploit this flaw by sending a specially crafted message, causing unbound...

Timing Attack

Overview Affected versions of this package are vulnerable to Timing Attack through the mod3 and modQ reduction helpers in org.bouncycastle.pqc.math.ntru.Polynomial and org.bouncycastle.pqc.crypto.ntru.NTRUSampling. An attacker can recover information about NTRU private key material by measuring t...

CVE-2026-63578

Allocation of resources without limits in password-based private-key decryption PbeUtilities.GenerateCipherParameters in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply an encrypted private key, such as a PKCS8 EncryptedPrivateKeyInfo or "ENCRYPTED PRIVAT...

CVE-2026-63575

Loop with unreachable exit condition in the PKCS12 key derivation Pkcs12ParametersGenerator in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a PKCS12 PFX file, or a PKCS8 encrypted private key that uses a PKCS12 password-based encryption algorithm, to...

CVE-2026-63572

Allocation of resources without limits in PKCS12 keystore loading Pkcs12Store.Load in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a PKCS12 PFX file to cause a denial of service through CPU exhaustion via an iteration count close to 2^31 in the file's...

CVE-2026-63577

Improper certificate validation in the directoryName name-constraint check PkixNameConstraintValidator.WithinDNSubtree in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can have certificates issued by, a name-constrained intermediate CA to get...

CVE-2026-63576

Improper certificate validation in PkixNameConstraintValidator ExtractHostFromURL in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a name-constrained subordinate CA, or anyone able to obtain certificates with chosen subjectAltName URIs from such a CA, to bypass permitted or...

CVE-2026-17507

In Bouncy Castle for Java before 1.86, the MLS implementation org.bouncycastle.mls holds RFC 9420's uint32 leafindex in a signed int, so a wire value with the top bit set decodes to a negative number. That is a legitimate encoding rather than malformed input, and it must still decode, since the M...