CVE-2026-59641

Description

In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).

Is your site exposed to CVE-2026-59641?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-345 CWE-345

References

Other References

https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8 https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721 https://github.com/bcgit/bc-java/wiki/CVE-2026-59641

Frequently Asked Questions

What is CVE-2026-59641? +

In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).

How do I check if I'm vulnerable to CVE-2026-59641? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-62995

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. in versions …

CVE-2026-53536

Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the /v1/step-files/signed download endpoint verified the supplied JWT …

CVE-2026-45022

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed …

CVE-2026-42206

Roadiz is a polymorphic content management system based on a node system. Prior to versions 2.3.43, 2.5.45, 2.6.31, and 2.7.18, …

CVE-2026-47202

Kavita is a cross platform reading server. Prior to 0.9.0.2, an Improper Token validation flaw permits a remote and unauthenticated …

CVE-2025-21606

stats is a macOS system monitor in for the menu bar. The Stats application is vulnerable to a local privilege …