# CVE-2026-112900: Pillow argument injection in Ghostscript EPS processing

Source: https://junglewise.ai/threats/cve-2026-112900-pillow-is-a-python-imaging-library-from-2-6-0-until-13-0-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

CVE-2026-112900 · Severity: critical · CVSS 4 · Published 2026-10-19

Pillow is a Python library for image processing that supports loading EPS (Encapsulated PostScript) files by invoking the Ghostscript tool. An attacker who can control the filename of an EPS file being processed can inject arbitrary Ghostscript command-line arguments, potentially leading to arbitrary command execution if the attacker also controls a referenced file containing additional arguments. This could allow an attacker to gain code execution on systems processing untrusted EPS files.

Technologies: [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-112900 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112900 being exploited in the wild.

**How severe is CVE-2026-112900?** Critical severity, with a CVSS score of 4, published 19 October 2026.

**Which products and versions are affected?** pillow (PyPI) >= 2.6.0, < 13.0.0, ECOSYSTEM:introduced=2.6.0,fixed=13.0.0; Python Pillow Contributors Pillow 2.6.0 through 12.x.

**Is there a fix for CVE-2026-112900?** Yes. pillow (PyPI): upgrade to 13.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112900 attacked?** It is attacked over the network or with local access, in a software library.

**Am I affected by CVE-2026-112900?** Check whether you run pillow (PyPI) or Python Pillow Contributors Pillow at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- pillow (PyPI): upgrade to 13.0.0 or later

  ```sh
  pip install "pillow>=13.0.0"
  ```


## Technical details

The vulnerability exists in EpsImagePlugin.Ghostscript, which passes a caller-controlled filename after the -f flag without converting it to an absolute path. A filename beginning with a hyphen can be misinterpreted as a Ghostscript option, allowing argument injection. Arbitrary command execution requires a leading @ filename (argument-file syntax) and attacker control of that referenced file; the default -dSAFER sandbox can be bypassed. The flaw affects all versions from 2.6.0 through 12.x, and was fixed in version 13.0.0 by converting the EPS filename to an absolute path before invocation.

## Affected products

- Python Pillow Contributors Pillow 2.6.0 through 12.x

## Identifiers

- CVE-2026-112900
- GHSA-w889-685w-c8fh

## Timeline

- 2026-10-19: disclosed
- 2026-10-16: patched: Fixed in version 13.0.0 released October 16, 2026

## References

- [https://github.com/python-pillow/Pillow/commit/a2c363141da31a265dd536c945677db4b64f3ec9](https://github.com/python-pillow/Pillow/commit/a2c363141da31a265dd536c945677db4b64f3ec9)
- [https://github.com/python-pillow/Pillow/releases/tag/13.0.0](https://github.com/python-pillow/Pillow/releases/tag/13.0.0)

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- [Pillow memory denial of service in TIFF and EXIF parsing](https://junglewise.ai/threats/cve-2026-128066-pillow-memory-dos-in-tiff-and-exif-ifd-parsing-via-overlapping)
- [Pillow libtiff encoder memory disclosure and crash via crafted TIFF tags](https://junglewise.ai/threats/cve-2026-112902-pillow-memory-disclosure-and-segfault-in-libtiff-encoder-via)
- [Pillow EPS load decompression bomb check bypass in Ghostscript scaling](https://junglewise.ai/threats/cve-2026-112899-pillow-eps-load-scale-lets-ghostscript-render-past-the)
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