SB2026052521 - Denial of service in PyPDF
Published: May 25, 2026
Security Bulletin ID
SB2026052521
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: CVE-2026-48735)
CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling
CVSSv4: 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/E:U/U:Green
The vulnerability allows a remote attacker to cause excessive memory consumption.
The vulnerability exists due to allocation of resources without limits or throttling in the XMP metadata parser when parsing large XMP metadata streams in a PDF file. A remote attacker can supply a specially crafted PDF file to cause excessive memory consumption.
Remediation
Install update from vendor's website.