PT-2026-103589

CVE-2026-102998

Published

2026-09-30

Updated

2026-10-29

Description by

CVSS 4.0

8.7

High

MetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.19.0

Description A crafted PDF containing specific form field values can trigger a performance issue during appearance-stream generation within the pypdf/generic/ appearance stream.py file. This occurs when an application updates fields with flattening enabled, causing the system to repeat invariant selection-data work inside a loop. This inefficiency leads to excessive runtimes and can result in application unavailability.

Recommendations Update to version 6.19.0.

Exploitability

Exploit

Fix

Impacts

Researchers

Manop55555

Vendors

Affected products

Weakness enumeration

CWE-400: Uncontrolled Resource Consumption

Related identifiers