Bug 2563682 (CVE-2026-119208) - CVE-2026-119208 pypdf: pypdf: Denial of Service via forged page count in encrypted PDFs
Summary: CVE-2026-119208 pypdf: pypdf: Denial of Service via forged page count in encr...
Keywords:
Status: NEW
Alias: CVE-2026-119208
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-29 20:59 UTC by OSIDB Bzimport
Modified: 2026-10-29 21:11 UTC (History)
23 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-29 20:59:52 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.
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