CVE-2026-17508

In Bouncy Castle for Java before 1.86, several password-based key derivation entry points ran the KDF with cost parameters taken from the untrusted input being processed, without bounding them, so a small input could dictate an arbitrary amount of work before any password or integrity check could...

CVE-2026-63570

Loop with unreachable exit condition in Pkcs12Store.GetCertificateChain in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a crafted PKCS12 file to an application that loads it and requests a key entry's certificate chain to cause a denial of service, in...

UBUNTU-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...

CVE-2026-103600

Uncontrolled recursion in the ASN.1 parser Asn1InputStream, Asn1StreamParser in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service via a crafted ASN.1 encoding of deeply nested constructed elements for example SEQUENCE...

CVE-2026-103604

Inefficient algorithmic complexity in X.509 distinguished name string conversion X509Name.ToString and IetfUtilities.ValueToString in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a...

CVE-2026-103603

Memory allocation with excessive size value in the HSS/LMS signature code HssPublicKeyParameters, HssSignature in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker who can supply both an HSS public key and a signature to cause a denial of service...

CVE-2026-102514

A flaw was found in PeaZip. When decompressing PEA archives, the application fails to properly validate compressed block sizes, resulting in an out-of-bounds write vulnerability. By convincing a victim to open or extract a specially crafted archive file, an attacker could exploit this flaw to...

CVE-2026-17508

The Bouncy Castle for Java cryptographic library (versions before 1.86 , LTS before 2.73.13 , and FIPS before bcpkix-fips 1.0.13, 2.0.13, and 2.1.13) contains a vulnerability where password-based key derivation functions (KDFs) use unbounded cost parameters from untrusted input. Specifically, the...

EUVD-2026-91236

In Bouncy Castle for Java before 1.86, several password-based key derivation entry points ran the KDF with cost parameters taken from the untrusted input being processed, without bounding them, so a small input could dictate an arbitrary amount of work before any password or integrity check could...

CVE-2026-17507 MLS membership checks compare a uint32 leaf_index as signed, admitting an out-of-range sender

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...

CVE-2026-85005

The Popup Maker WP WordPress plugin through 1.4.5 does not perform authorization checks on several of its actions and exposes its management page to any logged-in user, allowing users with a low-privileged role such as Subscriber to store display-targeting values that are later invoked as...

CVE-2026-63568

Allocation of resources without limits or throttling in the CMP/CRMF password-based MAC verifier PKMacBuilder in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a CMP message or CRMF certifica...

CVE-2026-63566

Memory allocation with excessive size value in the DTLS handshake reassembly DtlsReliableHandshake, DtlsReassembler in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated DTLS peer to cause a denial of service through memory exhaustion via crafted handshake...

EUVD-2026-91234

Inefficient algorithmic complexity in X.509 distinguished name string conversion X509Name.ToString and IetfUtilities.ValueToString in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a...

CVE-2026-103604

The bc-csharp library by Legion of the Bouncy Castle Inc. (versions before 2.7.0 ) is vulnerable to a denial of service via CPU exhaustion due to inefficient algorithmic complexity. The issue resides in the X.509 distinguished name string conversion within the X509Name.ToString and IetfUtilities....

CVE-2026-103604 Quadratic-time escaping when converting X.509 distinguished names to strings

Inefficient algorithmic complexity in X.509 distinguished name string conversion X509Name.ToString and IetfUtilities.ValueToString in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a...

CVE-2026-103604 Quadratic-time escaping when converting X.509 distinguished names to strings

Inefficient algorithmic complexity in X.509 distinguished name string conversion X509Name.ToString and IetfUtilities.ValueToString in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a...

CVE-2026-103604 Quadratic-time escaping when converting X.509 distinguished names to strings

Inefficient algorithmic complexity in X.509 distinguished name string conversion X509Name.ToString and IetfUtilities.ValueToString in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker to cause a denial of service through CPU exhaustion via a...

CVE-2026-103603 Unbounded HSS public key level count allows huge array allocation during signature verification

Memory allocation with excessive size value in the HSS/LMS signature code HssPublicKeyParameters, HssSignature in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker who can supply both an HSS public key and a signature to cause a denial of service...

EUVD-2026-91233

Memory allocation with excessive size value in the HSS/LMS signature code HssPublicKeyParameters, HssSignature in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated attacker who can supply both an HSS public key and a signature to cause a denial of service...