---
title: "CVE-2026-112398: Pillow - Buffer Overflow"
description: "Pillow < 13.0.0 contains a buffer overflow caused by improper handling of FlashPix JPEG-tile decoding in ImagingJpegDecode, letting attackers supply crafted OLE2 FlashPix files to execute arbitrary code, exploit requires olefile dependency and untrusted input."
url: https://panop.io/threat-heartbeat/CVE-2026-112398/
---

# CVE-2026-112398 Pillow - Buffer Overflow

Pillow < 13.0.0 contains a buffer overflow caused by improper handling of FlashPix JPEG-tile decoding in ImagingJpegDecode, letting attackers supply crafted OLE2 FlashPix files to execute arbitrary code, exploit requires olefile dependency and untrusted input.

CVSS base score 9.2 /10

Critical

CISA KEV

Not listed

Public exploit

None known

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-112398)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

19 October 2026

Updated

20 October 2026

Weakness

[CWE-122](https://cwe.mitre.org/data/definitions/122.html)

## Vendor fix

Update to version 13.0.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-112398](https://nvd.nist.gov/vuln/detail/CVE-2026-112398)
- [https://github.com/python-pillow/Pillow/commit/242a059aedc1935097d9aa1dc3f099750467ba75](https://github.com/python-pillow/Pillow/commit/242a059aedc1935097d9aa1dc3f099750467ba75)
- [https://github.com/python-pillow/Pillow/releases/tag/13.0.0](https://github.com/python-pillow/Pillow/releases/tag/13.0.0)
- [https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x8w-8jj5-q52h](https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x8w-8jj5-q52h)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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