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4.2.1

Software Release Date: 24 August 2026

Summary:

This is a security release for the SVX Platform.

Security Fixes

  • SD-JWT presentation verification now rejects any Disclosure that isn't referenced by a digest in the payload, instead of silently dropping it and letting the rest of the presentation pass.

  • Disclosures and other JWT parts containing invalid UTF-8 are now rejected outright, instead of being silently decoded in a lossy way.

  • Presentations containing the same disclosure more than once are now rejected with a clearer, dedicated error message.

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