CVE-2026-113786 — pypdf: Unvalidated JPEG image data loading
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…
Published: 2026-10-21 · CVSS: 2.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7