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VULNERABILITIES

CVE-2026-113786 Details

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.1, an attacker can craft a PDF containing image data labeled with the /DCTDecode filter that causes Pillow to select and invoke an unintended image parser when the image is loaded. Environments without the optional Pillow dependency are not affected. This issue is fixed in version 6.21.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/py-pdf/pypdf/commit/512d8eb94eb04be1d1c90504e6da2dcef8679e07 [email protected]
https://github.com/py-pdf/pypdf/pull/4222 [email protected]
https://github.com/py-pdf/pypdf/releases/tag/6.21.1 [email protected]
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hx5-vpf9-5wcv [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-183Permissive List of Allowed Inputs[email protected]
CWE-20Improper Input Validation[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-113786
NVD Published Date:
Oct 21, 2026
NVD Last Modified:
Oct 27, 2026
Source:
[email protected]
CVE-2026-113786 Details - Not Deferred