CVE-2026-59642

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CVSS 4.0

8.7 high

EPSS

<1%p4

Published

Aug 3, 2026 (Aug 3, 2026)

Modified

Aug 28, 2026

Description

In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).

Vendors: bouncycastle
Products: bc-java, bcpkix-fips, bouncy castle for java lts
Weakness: CWE-354
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber

NVD CVE.org GitHub PoCs EPSS (0.1%)

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