BIT-pillow-2026-96636

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Import Source

https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-96636.json

JSON Data

https://api.osv.dev/v1/vulns/BIT-pillow-2026-96636

Aliases

Published

2026-10-29T08:58:10Z

Modified

2026-10-29T10:55:49Z

Summary

Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)

Details

Pillow is a Python imaging library. Prior to 13.0.0, MpoImageFile.seek() and DcxImageFile.seek() reparse later MPO or DCX frames and replace self._size without rerunning Image._decompression_bomb_check(). A crafted multi-frame image can use a tiny first frame to pass Image.open() and then declare an over-limit later frame. Normal frame iteration through seek(), load(), or ImageSequence.Iterator can decode that frame and commit hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.

Database specific

{
    "cpes":  [
        "cpe:2.3:a:python:pillow:*:*:*:*:*:python:*:*"
    ],
    "severity":  "Medium"
}

References

Affected packages

Bitnami / pillow

Package

Name: pillow
Purl: pkg:bitnami/pillow

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

13.0.0

Database specific

source

"https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-96636.json"