Version 6.21.2, 2026-10-21

What's new

Security (SEC)

• Avoid repeated full file loads (#4240) by @stefan6419846
• Limit size of standard xref table (#4239) by @stefan6419846

Bug Fixes (BUG)

• Decode UniGB-UTF16 CMaps as UTF-16BE (#4231) by @4444wjt
• Keep 8-bit DeviceRGB image mode (#4230) by @DGrutt
• Preserve all annotation quadrilaterals when merging pages (#4223) by @repzakske

Robustness (ROB)

• Multiple fixes

Full Changelog