Resource exhaustion in PyPDF - CVE-2026-59936
Published: August 7, 2026
Vulnerability identifier: #VU141280
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: CVE-2026-59936
CWE-ID: CWE-400
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 uncontrolled resource consumption in the page content stream parser when parsing a page content stream containing a non-terminated inline image. A remote attacker can supply a crafted PDF to cause a denial of service.
The issue is triggered when processing page content streams, such as during text extraction.
Affected software
PyPDF
How to mitigate CVE-2026-59936
Install security update from vendor's website.
PyPDF - update to 6.14.1