MEDIUM

GHSA-763m-79hh-57f2

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

Quick fix

GHSA-763m-79hh-57f2 — pypdf: upgrade to the fixed version with the command below.

pip install --upgrade 'pypdf>=6.16.1'

Details

### 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 been fixed in [pypdf==6.16.1](https://github.com/py-pdf/pypdf/releases/tag/6.16.1).

### Workarounds

If you cannot upgrade yet, consider applying the changes from PR [#3966](https://github.com/py-pdf/pypdf/pull/3966).

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/pypdf

Introduced in: 0Fixed in: 6.16.1

Fixpip install --upgrade 'pypdf>=6.16.1'

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-763m-79hh-57f2[WEB]
https://github.com/py-pdf/pypdf/pull/3966[WEB]
https://github.com/py-pdf/pypdf/commit/d91ab705fd81ed1a9cec175c6958600dea1a4942[WEB]
https://github.com/py-pdf/pypdf[PACKAGE]
https://github.com/py-pdf/pypdf/releases/tag/6.16.1[WEB]