BIT-pillow-2026-96638

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-96638.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-pillow-2026-96638
Aliases
Published
2026-10-29T08:58:12Z
Modified
2026-10-29T10:55:36Z
Summary
Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / absolute mode
Details

Pillow is a Python imaging library. From 9.1.0 until 13.0.0, BmpRleDecoder.decode() in src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to 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
9.1.0
Fixed
13.0.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-96638.json"