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...

RCE (Remote Code Execution) org.bouncycastle:bcprov-lts8on Dependency in Confluence Data Center

This High severity RCE Remote Code Execution vulnerability was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This RCE Remote Code Execution vulnerability, with a CVSS Score of 8.7 and a CVSS Vector of...

Denial Of Service (DoS)

Bouncy Castle is vulnerable to Denial Of Service DoS. The vulnerability is due to an unbounded HSS public-key level count during verification, which allows an attacker to trigger excessive memory allocation and potentially cause a denial-of-service condition...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in HSSPublicKeyParameters.getInstance and HSSSignature.getInstance, which read the HSS level count L from an encoded public key without the RFC 8554 depth cap of 8 enforced only during key...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in HSSPublicKeyParameters.getInstance and HSSSignature.getInstance, which read the HSS level count L from an encoded public key without the RFC 8554 depth cap of 8 enforced only during key...

CVE-2026-58060 HSS public-key level count unbounded, enabling huge allocation on verify

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...