CVE-2023-44271
python-pillow: uncontrolled resource consumption when textlength in an ImageDraw instance operates on a long text argument
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 30, 2023
Updated · November 21, 2025
Description
A flaw was found in Pillow. A denial of service issue uncontrollably allocates memory to process a given task, potentially causing a service to crash by having it run out of memory. This occurs for TrueType in ImageFont when text length in an ImageDraw instance operates on a long text argument.
Statement
This security vulnerability is categorized as having a moderate impact because it only results in increased memory consumption when exceptionally long strings are utilized as text input.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 · Uncontrolled Resource Consumption