CVE-2026-13506

CVE-2026-13506 affects multiple Bouncy Castle for Java lines: Java mainline prior to 1.85; Java LTS prior to 2.73.12; and Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.x), 2.0.2 (2.0.x), and 2.1.3 (2.1.x). Root cause is a Lazy ASN.1 sequence that resets the nesting-depth guard, with potential im...