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CVE-2026-112398

9.2 critical exploit SSVC exploitation: poc Analyzed
NVD · CVE.org

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's FlashPix JPEG-tile decoder can write decoded scanlines beyond the allocated tile buffer. FlashPix (FPX) JPEG decoding selects raw mode LA with two bytes per pixel, while an unrecognized JPEG mode can be decoded as JCS_UNKNOWN with four components, causing ImagingJpegDecode to write four-component scanlines into the two-byte tile buffer. An attacker can supply a crafted OLE2 FlashPix file to an application with the optional olefile dependency installed that opens or thumbnails untrusted input. This can corrupt heap memory and may allow arbitrary code execution. This issue is fixed in version 13.0.0.

Fix

Public exploits 1

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 6

  1. Cpes+1 CPE criteria (now 1)NVD modified 2026-10-27 21:01
  2. StatusPublished → AnalyzedNVD modified 2026-10-27 21:01
  3. StatusUndergoing Analysis → PublishedNVD modified 2026-10-22 21:06
  4. StatusPublished → Undergoing AnalysisNVD modified 2026-10-20 19:48
  5. StatusReceived → PublishedNVD modified 2026-10-19 21:07
  6. First seenCVSS 9.2NVD modified 2026-10-19 22:17

Affected (CPE criteria) 1

  • cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

References 4