# CVE-2026-49836

## Summary

- **CVE ID:** CVE-2026-49836
- **Severity:** MEDIUM
- **CVSS Score:** 4.6 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-22, CWE-73
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## Description

psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.17.1, `SmartObject.save()` writes an embedded smart object to a path taken verbatim from the PSD file. Because that name is attacker-controlled and unsanitised, a tool that extracts embedded objects from an untrusted `.psd` can be made to write attacker-chosen bytes to an attacker-chosen path (absolute or `../`-traversing), outside its intended output directory. A secondary issue in `SmartObject.open()` for external-kind smart objects allows the attacker-controlled `fullPath` descriptor to be used as an arbitrary file read path, enabling exfiltration of the read content to the controlled write destination. Both issues are fixed in v1.17.1.

## Affected Products

- psd-tools — psd-tools (< 1.17.1)

## References

- [CNA](https://github.com/psd-tools/psd-tools/security/advisories/GHSA-2rmg-vrx8-9j2f)
- [CNA](https://github.com/psd-tools/psd-tools/pull/657)
- [CNA](https://github.com/pypa/advisory-database/tree/main/vulns/psd-tools/PYSEC-2026-2969.yaml)
- [CNA](http://github.com/psd-tools/psd-tools/releases/tag/v1.17.1)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._