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CVE‐2026‐5588

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David Hook edited this page Apr 21, 2026 · 6 revisions

Title: PKIX draft CompositeVerifier accepts empty signature sequence as valid.

Issue affecting: BC 1.67 to 1.83.

Fixed versions: BC 1.84

Platform affected: Java 4 and later.

The test OID for the early draft of the COMPOSITE signature type would accept an empty signature and treat it as valid. The patch enforces a check to ensure at least one signature has been validated.

The fix was introduced in commit 656bae0dbd9b1521f840521ff786e78749fe3057

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