GHSA-jm82-fx9c-mx94

Updated on 18 Jun 2026

Severity

Awaiting Analysis

Details

Overview

About vulnerability

Impact

An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value.

Patches

This has been fixed in [pypdf==6.13.3](https://github.com/py-pdf/pypdf/releases/tag/6.13.3).

Workarounds

If you cannot upgrade yet, consider applying the changes from PR [#3871](https://github.com/py-pdf/pypdf/pull/3871).

Details

Affected product:
pypdf
Affected packages:
pypdf @ 5.9.0.post9+tuxcare

Fixes