mtlcl410andClaude Opus 5.5 4a35a1cb23 M9: rewriting a certified form's XFA data is a form fill (#2759) ...

The IRCC IMM forms are certified (DocMDP P=2) and then saved once more
with Reader Extensions: a later revision adds the UR3 usage-rights
signature and rewrites the XFA `datasets` packet. The diff classified any
rewritten stream that wasn't page content or the catalog's XMP as "other
changes", so these untouched forms validated as invalid.

A stream the signed revision's /AcroForm /XFA array names `datasets` or
`form` (the form's data and state) is now a form fill when rewritten,
permitted at P=2 and P=3 and refused at P=1 as before. The roles come from
the signed revision, so a later revision that names the template
"datasets" doesn't make rewriting it a form fill.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RUNQSPVXx3dDBabRZHAnjz

2026-10-17 01:21:28 +08:00

..

acrobat-features.toml

M9: rewriting a certified form's XFA data is a form fill (#2759)

2026-10-17 01:21:28 +08:00