Bug 2496040 (CVE-2026-57204) - CVE-2026-57204 pypdf: pypdf: Denial of Service via crafted PDF with missing stream length
Summary: CVE-2026-57204 pypdf: pypdf: Denial of Service via crafted PDF with missing s...
Keywords:
Status: NEW
Alias: CVE-2026-57204
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2496192 2496191
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-01 16:04 UTC by OSIDB Bzimport
Modified: 2026-07-01 20:40 UTC (History)
22 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-01 16:04:17 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.
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