Bug 2482739 (CVE-2026-48156) - CVE-2026-48156 pypdf: pypdf: Denial of Service via crafted PDF
Summary: CVE-2026-48156 pypdf: pypdf: Denial of Service via crafted PDF
Keywords:
Status: NEW
Alias: CVE-2026-48156
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2484933 2484935
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 16:02 UTC by OSIDB Bzimport
Modified: 2026-08-15 08:27 UTC (History)
23 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-05-28 16:02:03 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.
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