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CVE-2026-114501

5.3 · MEDIUM

Pillow is a Python imaging library.

Published Oct 21, 2026pythonCWE-226EPSS 0.37%

Overview

CVE-2026-114501 is a medium-severity vulnerability affecting python pillow. It was published on October 21, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Pillow is a Python imaging library. From 11.2.1 until 13.0.0, Arrow export assumes that an image's rows are tightly contiguous and exports from im->blocks[0].ptr even when PILLOW_ALIGNMENT makes aligned_linesize include row padding or an aligned offset before the first row. The resulting Arrow buffer can include uninitialized padding, bytes preceding the first row, or stale heap contents from previously freed images. Applications that configure alignment and export images to Arrow can therefore disclose one user's pixels or other process memory to another user. This issue is fixed in version 13.0.0.

Remediation

Check the references section for vendor advisories and patches from python. Update pillow to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
pythonpillow>= 11.2.1, < 13.0.0Affected

References

GitHubgithub.com/python-pillow/Pillow/commit/19f64946eb247b973dd4560be7dea3bf979d2e6aGitHubgithub.com/python-pillow/Pillow/pull/10172GitHubgithub.com/python-pillow/Pillow/releases/tag/13.0.0GitHubgithub.com/python-pillow/Pillow/security/advisories/GHSA-654x-cwwv-5j9cGitHubgithub.com/python-pillow/Pillow/security/advisories/GHSA-654x-cwwv-5j9c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-114501?

CVE-2026-114501 is a medium-severity vulnerability affecting python pillow. It was published on October 21, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-114501?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-114501?

Check the references section for vendor advisories and patches from python. Update pillow to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-114501?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-114501 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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