✅ Added
- PDF text extraction: Extract text from PDF attachments for content analysis with text quality filtering, FlateDecode and ASCIIHexDecode filter support, UTF-16 detection and conversion, ligature support for Standard and MacRoman encodings, and new
rspamadm mime -r flag for raw extraction (#5762) - Task registry for Lua: New task registry prevents use-after-free bugs in async Lua callbacks using counter-based keys instead of raw pointers for safe validation (#5803)
- ClickHouse extra tables API: Plugins can dynamically register custom ClickHouse tables via
rspamd_plugins['clickhouse'].register_extra_table() with per-table schemas, row callbacks, and independent retention settings (#5810) - WebUI error log: New error log modal tracking last 50 API errors with unseen error counter badge, copy-to-clipboard support with HTTP fallback, and color-coded error types with responsive column hiding (#5821)
🔧 Fixed
- Neural symbol flags: Include symbols with no flags by default instead of excluding them
- Symcache FINE propagation: Make FINE propagation deterministic (#5825)
- URL numeric IP: Prevent false positives from numeric IP regeneration in mailto URLs (#5823)
- Settings selector: Allow spaces in selector regexps
- Thai language: Prevent R_MIXED_CHARSET false positives by marking Thai as having diacritics (#5817, #5799)
- GPT plugin: Improved output format instructions for more reliable responses (#5815, #5670)
- io_uring HTTP: Handle connection errors properly in HTTP client backend
- MIME Lua stack: Restore Lua stack properly in second-pass detection
- Redis stats: Add null checks for task in callbacks
- Lua 5.4 compatibility: Fixes in ClickHouse and Elastic plugins (#5774)
- Task lifetime crashes: Fix potential crashes when Redis is unavailable longer than task lifetime (#5803)
🔄 Improved
- replxx build: Fix build with LLVM 21+
- macOS build: Add Homebrew LLVM libc++ library path
- fmt library: Update to version 12.1.0
- SDK headers: Avoid SDK headers in include path when package ROOT is specified
This patch release introduces PDF text extraction capabilities for enhanced content analysis, improves stability through the new task registry that prevents use-after-free bugs in async Lua callbacks, and adds ClickHouse extensibility for custom table registration. Multiple bug fixes address neural network symbol handling, symcache determinism, URL processing, and language detection. Recommended upgrade for all users.