CVE-2026-59642highCWE-354

CVE-2026-59642: high-severity vulnerability in Legion of the Bouncy Castle Inc. BC-FJA

CMS AuthenticatedData content not bound to MAC when authAttrs present

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.3%
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).
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/U:Amber
Affected products
Legion of the Bouncy Castle Inc. · BC-FJALegion of the Bouncy Castle Inc. · BC-JAVALegion of the Bouncy Castle Inc. · BC-LTS-JAVA
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