Bug 2428428 (CVE-2026-22690) - CVE-2026-22690 pypdf: pypdf: Denial of Service via crafted PDF with missing /Root object
Summary: CVE-2026-22690 pypdf: pypdf: Denial of Service via crafted PDF with missing /...
Keywords:
Status: NEW
Alias: CVE-2026-22690
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: 2026-01-10 05:01 UTC by OSIDB Bzimport
Modified: 2026-01-14 23:48 UTC (History)
38 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-01-10 05:01:38 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for missing /Root object with large /Size values. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for actually invalid files. This can be achieved by omitting the /Root entry in the trailer, while using a rather large /Size value. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.
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