LOW 2.3 NVD
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 t
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.
References
- 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
This low severity vulnerability with a CVSS score of 2.3 was published on 2026-10-21 via NVD.
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