Bug 2560166 (CVE-2026-115585) - CVE-2026-115585 pypdf: pypdf: Denial of Service via malformed cross-reference streams
Summary: CVE-2026-115585 pypdf: pypdf: Denial of Service via malformed cross-reference...
Keywords:
Status: NEW
Alias: CVE-2026-115585
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 19:41 UTC by OSIDB Bzimport
Modified: 2026-10-23 19:49 UTC (History)
23 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-23 19:41:38 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing crafted cross-reference streams to produce long runtimes. This issue is fixed in version 6.21.2.
Note You need to log in before you can comment on or make changes to this bug.