CVE-2026-54530
Received Received - Intake
Infinite Loop in PyPDF Text Extraction

Publication date: 2026-06-22

Last updated on: 2026-06-22

Assigner: GitHub, Inc.

Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.
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Meta Information
Published
2026-06-22
Last Modified
2026-06-22
Generated
2026-06-23
AI Q&A
2026-06-23
EPSS Evaluated
N/A
NVD
CVE-2026-54530
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
py-pdf pypdf to 6.13.0 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
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Executive Summary

This vulnerability exists in the pypdf library, a pure-python PDF library. Prior to version 6.13.0, an attacker can craft a specially designed PDF file that causes the library to enter an infinite loop when extracting text in layout mode.

The issue is fixed in version 6.13.0 of pypdf.

Impact Analysis

The vulnerability can cause the pypdf library to enter an infinite loop during text extraction in layout mode when processing a maliciously crafted PDF.

This can lead to denial of service conditions, such as application hangs or resource exhaustion, impacting availability.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade the pypdf library to version 6.13.0 or later, where the issue has been fixed.

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