PT-2026-56547 · Py Pdf · Pypdf

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-59936

NVD

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.1, an attacker can craft a PDF with a page content stream containing a not terminated inline image, causing an infinite loop during inline image end marker detection such as when extracting page text. This issue is fixed in version 6.14.1.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-59936

Affected Products

Pypdf

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59936 · Security Note
• https://github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b · Note
• https://github.com/py-pdf/pypdf/pull/3891 · Note
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr · Note
• https://github.com/py-pdf/pypdf/releases/tag/6.14.1 · Note