Bug 2443450 (CVE-2026-28351) - CVE-2026-28351 pypdf: pypdf: Denial of Service via crafted PDF with RunLengthDecode filter
Summary: CVE-2026-28351 pypdf: pypdf: Denial of Service via crafted PDF with RunLength...
Keywords:
Status: NEW
Alias: CVE-2026-28351
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: 2026-02-27 22:01 UTC by OSIDB Bzimport
Modified: 2026-03-02 11:29 UTC (History)
23 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-02-27 22:01:59 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.
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