OCTOBER 6, 2026
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Case File

CVE-2026-103000

HIGH · CVSS 7.5 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-30 · Last synced 2026-10-06

CyberRota Analysis

AI-Generated

The pypdf library prior to version 6.19.0 is vulnerable to a denial-of-service attack due to excessive memory consumption caused by crafted PDF files with overly large alphabetical page-label values. This vulnerability can lead to application unavailability when document page labels are retrieved. Organizations using pypdf for PDF processing should prioritize updating to version 6.19.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-103000
Severity
HIGH
CVSS
7.5
EPSS
0.30%

Original NVD Description

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.

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