Bug 2555875 (CVE-2026-112894) - CVE-2026-112894 pillow: pillow: Denial of Service via crafted multi-frame image conversion
Summary: CVE-2026-112894 pillow: pillow: Denial of Service via crafted multi-frame ima...
Keywords:
Status: NEW
Alias: CVE-2026-112894
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-19 22:01 UTC by OSIDB Bzimport
Modified: 2026-10-20 21:01 UTC (History)
59 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-19 22:01:31 UTC 
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow takes quadratic time to reserve PDF object identifiers when saving many frames with save_all enabled. PdfParser.next_object_id() repeatedly rebuilds and scans all previously reserved identifiers for every object. An attacker can supply a multi-frame image, including a small APNG with a large declared frame count, to an application that converts it to a multipage PDF. This can consume excessive CPU and deny service. This issue is fixed in version 13.0.0.
Note You need to log in before you can comment on or make changes to this bug.