CVE-2026-103000 — Vulnerability intelligence

py-pdf — pypdf

Published: 2026-09-30T21:17:07.490

CVSS

8.7

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.

Sources

• CVE-2026-103000
• Patch
• Patch, Issue Tracking
• Release Notes
• Vendor Advisory