Bug 2544308 (CVE-2026-103000) - CVE-2026-103000 pypdf: pypdf: Denial of Service via large alphabetical page labels
Summary: CVE-2026-103000 pypdf: pypdf: Denial of Service via large alphabetical page l...
Keywords:
Status: NEW
Alias: CVE-2026-103000
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 20:35 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 20:35:03 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.
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