CVE-2026-113786

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/py-pdf/pypdf/commit/512d8eb94eb04be1d1c90504e6da2dcef8679e07
https://github.com/py-pdf/pypdf/pull/4222
https://github.com/py-pdf/pypdf/releases/tag/6.21.1
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hx5-vpf9-5wcv

Configurations

No configuration.

History

21 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 15:17

Updated : 2026-10-27 23:16

NVD link : CVE-2026-113786

Mitre link : CVE-2026-113786

CVE.ORG link : CVE-2026-113786

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-183

Permissive List of Allowed Inputs

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