Intel

AIKIDO-2026-943399

bcpkix-jdk18on is vulnerable to Improper Validation of Integrity Check Value

Improper Validation of Integrity Check ValueCVE-2026-59642 Published 2 days ago

87

High Risk

This Affects:

JAVAbcpkix-jdk18on
0.0.1 - 1.84.0
Fixed in 1.85.0
Are you affected? Scan for Free

TL;DR

When CMS AuthenticatedData carries authenticated attributes, the MAC is verified over the attributes but the protected content itself is not bound to the MAC. This lets the content be replaced while the MAC still validates successfully. Before the fix, the integrity of authenticated content is not guaranteed when authenticated attributes are present. The fix binds the content to the MAC verification.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and you process CMS AuthenticatedData messages with authenticated attributes from untrusted sources.

Background info

bcpkix-jdk18on is vulnerable to Improper Validation of Integrity Check Value in versions 0.0.1 - 1.84.0.

How to fix this

Upgrade the org.bouncycastle:bcpkix-jdk18on library to the patch version.