CyberICT

CVE-2026-8763

Bouncycastle · Published August 3, 2026

CVSS v3.1

CRITICAL
Patch availableGet patch

Description

In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

Affected Products

  • BC Java < 1.85
  • Bouncy Castle FOR Java LTS <= 2.73.11
  • Fips Java API < 1.0.2.7
  • Fips Java API < 2.0.2

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N