BIT-pillow-2026-96641

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Import Source

https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-96641.json

JSON Data

https://api.osv.dev/v1/vulns/BIT-pillow-2026-96641

Aliases

Published

2026-10-29T08:58:16Z

Modified

2026-10-29T10:56:07Z

Summary

Pillow: Reachable undefined behavior in native integer operations, potentially leading to denial of service or logic integrity compromise

Details

Pillow is a Python imaging library. Prior to 13.0.0, PILfont text-width accumulation in src/_imaging.c checks positive glyph advances against INT_MAX but does not check negative advances against INT_MIN. Repeating a signed 16-bit advance of -32768 can therefore execute a signed C integer overflow in xsize += dx, producing a large positive width from a negative mathematical result. Applications that use getlength(), getsize(), or derived layout, quota, serialization, or allocation calculations can experience logic-integrity errors or resource consumption, while the high-level mask path commonly retains a decompression-bomb check. 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-2026-96641.json"