Version 6.21.0, 2026-10-16

What's new

Security (SEC)

• Improve performance and limit field work (#4219) by @stefan6419846
• Limit stream parsing work (#4218) by @stefan6419846

New Features (ENH)

• Allow custom fit modes for named destinations (#4181) by @JackyHsu-X

Bug Fixes (BUG)

• Treat NUL as whitespace in ArrayObject (#4198) by @Zephyr761
• Avoid overwriting unread objects in add_form_topname (#4190) by @tigger0jk
• Read an indirect page box on a writer page (#4179) by @usmanmateen

Full Changelog