Bug 2563681 (CVE-2026-119204) - CVE-2026-119204 pypdf: pypdf: Denial of Service via excessive memory consumption during PDF parsing
Summary: CVE-2026-119204 pypdf: pypdf: Denial of Service via excessive memory consumpt...
Keywords:
Status: NEW
Alias: CVE-2026-119204
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 20:58 UTC by OSIDB Bzimport
Modified: 2026-10-29 21:05 UTC (History)
23 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-29 20:58:09 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can consume excessive memory while parsing a crafted PDF page tree containing many shared resources. Page-tree flattening copies page dictionary and inherited resource entries without a document-wide entry budget, allowing the crafted resource structure to cause disproportionate allocations. This issue is fixed in version 6.21.4.
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