Bug 2544283 (CVE-2026-102998) - CVE-2026-102998 pypdf: pypdf: Denial of Service via crafted PDF form fields
Summary: CVE-2026-102998 pypdf: pypdf: Denial of Service via crafted PDF form fields
Keywords:
Status: NEW
Alias: CVE-2026-102998
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-30 20:32 UTC by OSIDB Bzimport
Modified: 2026-10-01 18:05 UTC (History)
24 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-30 20:32:48 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF with form field values can cause pypdf/generic/_appearance_stream.py appearance-stream generation to repeat invariant selection-data work inside a loop when an application updates fields with flattening enabled, resulting in excessive runtimes and application unavailability. This issue is fixed in version 6.19.0.
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