Sourced from pypdf's releases.

Version 6.10.0, 2026-04-10

What's new

Security (SEC)

• Disallow custom XML entity declarations for XMP metadata (#3724) by @​stefan6419846

New Features (ENH)

• Skip MD5 key derivation for AES-256 encrypted PDFs (#3694) by @​Ygnas

Bug Fixes (BUG)

• Use remove_orphans in compress_identical_objects (#3310) by @​j-t-1
• Fix PdfReadError when xref table contains comments before trailer (#3710) by @​rassie
• Correctly verify AES padding during decryption (#3699) by @​stefan6419846
• Fix stale object cache from non-authoritative object streams (#3698) by @​astahlman
• Fix extract_links pairing when annotations include non-links (#3687) by @​ReinerBRO

Documentation (DOC)

• Add AI policy (#3717) by @​stefan6419846

Full Changelog

Version 6.9.2, 2026-03-23

What's new

Security (SEC)

• Avoid infinite loop in read_from_stream for broken files (#3693) by @​stefan6419846

Robustness (ROB)

• Resolve UnboundLocalError for xobjs in _get_image (#3684) by @​Yuki9814

Full Changelog

Version 6.9.1, 2026-03-17

What's new

Security (SEC)

• Improve performance and limit length of array-based content streams (#3686) by @​stefan6419846

Full Changelog

Version 6.9.0, 2026-03-15

What's new

New Features (ENH)

• Expose /Perms verification result on Encryption object (#3672) by @​costajohnt

Performance Improvements (PI)

• Fix O(n²) performance in NameObject read/write (#3679) by @​dmitry-kostin
• Batch-parse all objects in ObjStm on first access (#3677) by @​dmitry-kostin

... (truncated)

Sourced from pypdf's changelog.

Version 6.10.0, 2026-04-10

Security (SEC)

• Disallow custom XML entity declarations for XMP metadata (#3724)

New Features (ENH)

• Skip MD5 key derivation for AES-256 encrypted PDFs (#3694)

Bug Fixes (BUG)

• Use remove_orphans in compress_identical_objects (#3310)
• Fix PdfReadError when xref table contains comments before trailer (#3710)
• Correctly verify AES padding during decryption (#3699)
• Fix stale object cache from non-authoritative object streams (#3698)
• Fix extract_links pairing when annotations include non-links (#3687)

Documentation (DOC)

• Add AI policy (#3717)

Full Changelog

Version 6.9.2, 2026-03-23

Security (SEC)

• Avoid infinite loop in read_from_stream for broken files (#3693)

Robustness (ROB)

• Resolve UnboundLocalError for xobjs in _get_image (#3684)

Full Changelog

Version 6.9.1, 2026-03-17

Security (SEC)

• Improve performance and limit length of array-based content streams (#3686)

Full Changelog

Version 6.9.0, 2026-03-15

New Features (ENH)

• Expose /Perms verification result on Encryption object (#3672)

Performance Improvements (PI)

• Fix O(n²) performance in NameObject read/write (#3679)
• Batch-parse all objects in ObjStm on first access (#3677)

Bug Fixes (BUG)

• Avoid sharing array-based content streams between pages (#3681)
• Avoid accessing invalid page when inserting blank page under some conditions (#3529)

... (truncated)

• fd0aeca REL: 6.10.0
• b15a374 SEC: Disallow custom XML entity declarations for XMP metadata (#3724)
• d0d9de6 DEV: Update cryptography to 46.0.7 in ci.txt
• 1e0e5be DOC: Include policies about AI and PoCs into security policy
• 3155e04 Bump cryptography from 46.0.6 to 46.0.7 in /requirements (#3723)
• 696b978 DEV: Bump codecov/codecov-action from 5 to 6 (#3701)
• 5456731 TST: Extending typing to tests; cover generic and scripts folder files (#3660)
• e00505e DOC: Add AI policy (#3717)
• bd95bd8 Fix PdfReadError when xref table contains comments before trailer (#3710)
• f3f501b DEV: Update pygments version to 2.20.0 (#3707)
• Additional commits viewable in compare view

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