---
id: CVE-2026-59936
aliases:
  - GHSA-5xf7-4p34-54qr
  - PYSEC-2026-3612
title: 'pypdf: Possible infinite loop for not terminated inline images'
summary: 'pypdf: Possible infinite loop for not terminated inline images'
severity: high
vendor: pypdf
product: pypdf
ecosystem: pip
affected:
  - pypdf < 6.14.1
patched:
  - pypdf 6.14.1
published: '2026-07-23'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:51:10.501615101Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-5xf7-4p34-54qr'
references:
  - url: 'https://github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59936'
  - url: 'https://github.com/py-pdf/pypdf/pull/3891'
  - url: >-
      https://github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b
  - url: 'https://github.com/py-pdf/pypdf'
  - url: 'https://github.com/py-pdf/pypdf/releases/tag/6.14.1'
  - url: 'https://github.com/advisories/GHSA-5xf7-4p34-54qr'
tags:
  - osv
  - pip
  - ghsa
epss: 0.0062
epssPercentile: 0.47474
cwe:
  - CWE-400
  - CWE-835
ingestedAt: '2026-07-23T17:18:58.564Z'
---

## Overview

### Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page with a not terminated inline image, as done when extracting the page text for example.

### Patches

This has been fixed in [pypdf==6.14.1](https://github.com/py-pdf/pypdf/releases/tag/6.14.1).

### Workarounds

If you cannot upgrade yet, consider applying the changes from PR [#3891](https://github.com/py-pdf/pypdf/pull/3891).

## Affected packages

- `pypdf < 6.14.1`

## Remediation

Upgrade to a patched release:

- `pypdf 6.14.1`