Allocation of Resources Without Limits or Throttling Affecting pypdf package, versions [,6.12.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.13% (3rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Allocation of Resources Without Limits or Throttling vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-PYTHON-PYPDF-17356472
  • published17 Jun 2026
  • disclosed16 Jun 2026
  • creditmanop55555

Introduced: 16 Jun 2026

NewCVE-2026-49461  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade pypdf to version 6.12.2 or higher.

Overview

pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files

Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the text extraction when handling form XObjects with self-references. An attacker can cause excessive memory consumption by crafting a PDF that triggers this behavior during text extraction.

CVSS Base Scores

version 4.0
version 3.1