CVE-2021-27923 – pillow

Package

Manager: pip
Name: pillow
Vulnerable Version: >=0 <8.1.2

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00605 pctl0.68659

Details

Pillow Denial of Service by Uncontrolled Resource Consumption Pillow before 8.1.2 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large.

Metadata

Created: 2021-03-18T19:54:43Z
Modified: 2025-08-15T13:58:18Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-95q3-8gr9-gm8w/GHSA-95q3-8gr9-gm8w.json
CWE IDs: ["CWE-20", "CWE-400"]
Alternative ID: GHSA-95q3-8gr9-gm8w
Finding: F067
Auto approve: 1