[GHSA] GHSA-763m-79hh-57f2 (medium) — pypdf: Possible long runtimes/large memory usage when extracting XForm objects

GHSA-763m-79hh-57f2 Severity: medium CVE: CVE-2026-84311

pypdf: Possible long runtimes/large memory usage when extracting XForm objects

### Impact

An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires extracting the text of a page with lots of XForm objects, where some of them might be re-used.

### Patches

This has bee