CVE-2026-59643: OpenPGP inline-signature policy failures silently ignored

Published Aug 3, 2026
·
Updated

In Bouncy Castle for Java before 1.85, OpenPGP inline-signature policy failures silently ignored. This issue also affects Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 2.0.13.

Affected Software

2 affected components
Bouncy Castle Bouncy Castle for Java<1.85
Bouncy Castle for Java FIPS (BC-FJA)<2.0.13

Event History

Aug 3, 2026
CVE Published
via MITRE·12:51 AM
Data Sourced
via MITRE·12:51 AM
DescriptionWeakness
Data Sourced
via NVD·01:16 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-59643?

CVE-2026-59643 has a risk score of 37, indicating a moderate level of severity.

2

What vulnerability does CVE-2026-59643 represent?

CVE-2026-59643 represents an issue where OpenPGP inline-signature policy failures are silently ignored in Bouncy Castle for Java.

3

How do I fix CVE-2026-59643?

To fix CVE-2026-59643, upgrade to Bouncy Castle for Java version 1.85 or later and Bouncy Castle for Java FIPS version bcpg-fips 2.0.13 or later.

4

Which versions of Bouncy Castle are affected by CVE-2026-59643?

CVE-2026-59643 affects Bouncy Castle for Java versions before 1.85 and Bouncy Castle for Java FIPS before bcpg-fips 2.0.13.

5

What is the impact of ignoring inline-signature policy failures as stated in CVE-2026-59643?

Ignoring inline-signature policy failures can lead to security vulnerabilities where unauthorized or invalid signatures may be accepted.

Contact

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