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Download DSS 6.5.1

Here, you can download the latest version of the Digital Signature Services open-source library released in October 2026. You can read more about DSS and how it can help you here.

Source code is available in .zip and tar.gz

.New features

  • [DSS-4001] DSS Demos : add a property to skip UTCTime encoding validation

Bug fixes / Issues

  • [DSS-3985] CB-AdES sigD.mId and some other elements miss a tag #6.32(tstr)
  • [DSS-3996] CB-AdES x5ts protected header is created for a single certificate in the chain
  • [DSS-3999] CB-AdES counter signatures shall be untagged

Dependencies

DSS core:

  • Bouncy Castle: 1.85 → 1.86
  • jose4j: 0.9.6 → 0.9.7
  • VeraPDF: 1.30.2 → 1.30.3
  • Apache HttpClient 5: 5.6.4 → 5.6.5
  • json-sKema: 0.31.0 → 0.32.0
  • Apache Commons Lang: 3.20.0 → 3.21.0
  • Google Guava: 33.6.0-jre → 33.7.2-jre
  • SLF4J: 2.0.18 → 2.0.20
  • Jackson: 2.22.2 → 2.22.3
  • additional test and build dependency updates

DSS demonstrations:

  • Spring Boot: 4.0.8 → 4.1.1
  • Apache CXF: 4.2.3 → 4.2.4
  • Swagger UI: 5.32.14 → 5.33.1
  • Jackson Jakarta RS JSON Provider: 3.2.2 → 3.2.3
  • Apache FreeMarker: 2.3.34 → 2.3.35
  • Apache Groovy: 4.0.32 → 4.0.33
  • SLF4J: 2.0.18 → 2.0.20
  • Logback: 1.6.3 → 1.6.5
  • Kotlin Standard Library: bumped to 2.4.21 to address vulnerability
  • additional test and build dependency updates

DSS bundles:

  • Eclipse Temurin JRE 26: 26.0.2+10 → 26.0.2.1+1 (Windows and Linux packages)
  • Apache Tomcat: 11.0.25 → 11.0.27

Migration

For information about code changes and migration process, please refer to the Migration Guide in documentation.