Bump pypdf from 6.19.0 to 6.21.4

DE
2d ago
+145-131

Bumps pypdf from 6.19.0 to 6.21.4.

Release notes

Sourced from pypdf's releases.

Version 6.21.4, 2026-10-28

What's new

Security (SEC)

Documentation (DOC)

Full Changelog

Version 6.21.3, 2026-10-27

What's new

Security (SEC)

Performance Improvements (PI)

Bug Fixes (BUG)

Documentation (DOC)

Developer Experience (DEV)

Maintenance (MAINT)

  • Revert: Reject unsupported key lengths in the /Encrypt dictionary by @​stefan6419846

Full Changelog

Version 6.21.2, 2026-10-21

What's new

Security (SEC)

Bug Fixes (BUG)

... (truncated)

Changelog

Sourced from pypdf's changelog.

Version 6.21.4, 2026-10-28

Security (SEC)

  • Limit the number of copied page attributes during flattening (#4290)
  • Detect EOF when reading standard xref table trailer (#4289)
  • Fix loop detection when cloning DictionaryObject (#4288)

Documentation (DOC)

  • Exclude performance issues from security reports (#4280)

Full Changelog

Version 6.21.3, 2026-10-27

Security (SEC)

  • Use the validated page count after decrypting a document (#4270)
  • Limit total number of cross-reference stream entries (#4269)
  • Avoid excessive error messages (#4265)

Performance Improvements (PI)

  • Read flat page label number trees once for all pages (#4251)
  • Collect the named destinations once when resolving links (#4249)
  • Avoid scanning all objects in get_outline_root (#4245)

Bug Fixes (BUG)

  • Resolve indirect widths in CID font /W arrays (#4267)

Documentation (DOC)

  • Block incremental writes of encrypted documents (#4246)

Developer Experience (DEV)

  • Update to PyPy 3.12 and pinned requirements (#4244)

Maintenance (MAINT)

  • Revert: Reject unsupported key lengths in the /Encrypt dictionary

Full Changelog

Version 6.21.2, 2026-10-21

Security (SEC)

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

Bug Fixes (BUG)

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

Robustness (ROB)

... (truncated)

Commits
  • b2c3fa2 REL: 6.21.4
  • ea4ac66 SEC: Limit the number of copied page attributes during flattening (#4290)
  • 06593f9 SEC: Detect EOF when reading standard xref table trailer (#4289)
  • f176db1 SEC: Fix loop detection when cloning DictionaryObject (#4288)
  • c7d391c PI: Speed up transformation matrix handling for layout mode text extraction (...
  • b330dcd DEV: Bump actions/setup-python from 7.0.0 to 7.1.0 (#4278)
  • 8901534 DOC: Exclude performance issues from security reports (#4280)
  • 70eab9b PI: Speed up parse_bfchar (#4273)
  • 4ef744f ROB: Skip an embedded file specification that is not a dictionary (#4256)
  • 945216f ROB: Keep the text state when a text state operator has no operand in layout ...
  • Additional commits viewable in compare view

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Summary by cubic

Updates pypdf from 6.19.0 to 6.21.4, which fixes several security vulnerabilities in PDF parsing and includes performance and robustness improvements. The lockfile re-resolves pyobjc framework markers and adds pyobjc-framework-pubsub.