PT-2026-67228 · Legion Of The Bouncy Castle · Bc-Fja+2

CVE-2026-58061 · Published 2026-08-03 · Updated 2026-08-03

Mitre

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber

In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. 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).

Exploit

Fix

Weakness Enumeration

CWE-354

Related Identifiers

CVE-2026-58061

Affected Products

Bc-Fja

Bc-Java

Bc-Lts-Java

References · 4

• 🔥 https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058061 · Exploit
• https://github.com/bcgit/bc-java/commit/08d675106bb663ddcc6ec0a4af6f6f62f512697b · Patch
• https://github.com/bcgit/bc-java/commit/cd4a5ab3ad619ff03c7767c1b8b19d5dea2970af · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-58061 · Security Note