SB2026111221 - Allocation of Resources Without Limits or Throttling in PyPDF

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Main Vulnerability Database SB2026111221

SB2026111221 - Allocation of Resources Without Limits or Throttling in PyPDF

Published: November 12, 2026

Security Bulletin ID SB2026111221
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of Resources Without Limits or Throttling (CVE-ID: N/A)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause excessive memory consumption, potentially resulting in denial of service.

The vulnerability exists due to insufficient resource allocation limits in pypdf image loading when processing images with filters that lack data size limits. A remote attacker can craft a PDF containing such images to trigger excessive memory usage when the images are loaded.


Remediation

Install update from vendor's website.

References