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✨ Feature Release

Rspamd 3.13.1

Feature Update with Stability and Security Improvements

✅ Added

  • Archive module: Full support for encrypted ZIP archives, including both ZipCrypto and AES encryption; both reading and writing of AES-encrypted ZIP archives is supported with updated Lua bindings using libarchive for flexible compatibility with all standard ZIP encryption schemes
  • Encrypted maps: Support for encrypted maps to enable new map distribution scenarios
  • Redis TLS: Configurable TLS connections in Redis backend for improved compatibility in secure environments

🔄 Improved

  • MIME encoding refactoring: Major overhauls and multiple fixes for MIME encoding logic, including improved handling and decoding of UTF-8 in MIME headers, resulting in more robust email processing and better compatibility
  • Learning system: Numerous fixes to learn checks and autolearn flag handling, prevention of duplicate message learning, and extended multiclass learning test coverage
  • Map helpers alignment: Map helpers now enforced to be aligned to 64 bytes to prevent unaligned memory access errors on certain platforms
  • CLI enhancements: Enhanced secretbox CLI and additional security test coverage
  • Platform compatibility: Improved compatibility with Lua versions above 5.1 and better support for 32-bit platforms

🔧 Fixed

  • Critical fixes: Fixed bug when converting zero-length strings to numbers
  • XML parsing: Fixed XML prolog detection in lua_magic module
  • Build issues: Fixed build issues on 32-bit platforms
  • Empty input handling: Addressed issues with empty input handling in lua_magic
  • Test stability: Improved stability of automated testing with multiple miscellaneous test fixes
  • Compatibility: Minor compatibility improvements and bugfixes (buffer allocation, missing cmath include, etc.)

This release introduces archive module extensibility with full encrypted archive support including AES, new map distribution capabilities, secure integration options with Redis TLS, robust email and message processing improvements, and bugfixes for broader platform compatibility. This is recommended as a major stability and feature update.