SB2026090794 - Allocation of Resources Without Limits or Throttling in PyPDF
Published: September 7, 2026
Security Bulletin ID
SB2026090794
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- 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: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause excessive memory consumption.
The vulnerability exists due to allocation of resources without limits or throttling in page label retrieval when accessing page labels in a PDF with large Roman numerals. A remote attacker can craft a PDF with large Roman page labels to cause excessive memory consumption.
Remediation
Install update from vendor's website.