pypdf 6.7.1

Version 6.7.1, 2026-02-17

on Python PyPI

What's new

Security (SEC)

• Detect cyclic references when accessing TreeObject.children (#3645) by @stefan6419846
• Limit size of /ToUnicode entries (#3646) by @stefan6419846
• Limit FlateDecode recovery attempts (#3644) by @stefan6419846

Bug Fixes (BUG)

• Avoid own object replacement logic in PageObject.replace_contents (#3638) by @stefan6419846
• Fix UnboundLocalError when update_page_form_field_values with /Sig (#3634) by @John-Sharp

Robustness (ROB)

• Avoid divison by zero when decoding FlateDecode PNG prediction (#3641) by @stefan6419846

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