Uncontrolled Memory Allocation in PyPDF - CVE-2026-41314
Published: April 15, 2026
Vulnerability identifier: #VU126253
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41314
CWE-ID: CWE-789
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to memory allocation with excessive size value in the FlateDecode image handling functionality when processing a crafted PDF containing large image dimension values. A remote attacker can supply a specially crafted PDF to cause a denial of service.
Affected software
PyPDF
How to mitigate CVE-2026-41314
Install security update from vendor's website.
PyPDF - update to 6.10.2