psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59991
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-22 20:17:04 UTC
Updated2026-09-23 18:12:04 UTC
Descriptionpsd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to 1.17.4, PSDImage.composite() and PSDImage.numpy() allocated output buffers from attacker-controlled PSD header geometry, including width, height, channels, depth, and per-layer rectangles, before validating those values against the available file data. A tiny crafted PSD could therefore cause multi-gigabyte memory allocation, and PSDImage.composite() could return a black image with only a warning instead of raising an exception. Services that composite untrusted PSD files could be terminated by out-of-memory handling. This issue is fixed in version 1.17.4.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.005170000 probability, percentile 0.414690000 (date 2026-09-24)

Problem Types: CWE-789 | CWE-789 CWE-789: Memory Allocation with Excessive Size Value

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Psd-tools Psd-tools affected < 1.17.4 Not specified

References

ReferenceSourceLinkTags
github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/psd-tools/psd-tools/releases/tag/v1.17.4 [email protected] github.com
github.com/psd-tools/psd-tools/commit/a3d9a53ad51e667b5772a4f636ca6f2e16... [email protected] github.com
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