# CVE-2026-112899: Pillow EPS load decompression bomb check bypass in Ghostscript scaling

Source: https://junglewise.ai/threats/cve-2026-112899-pillow-eps-load-scale-lets-ghostscript-render-past-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-05. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-112899 · Severity: medium · CVSS 4 · Published 2026-11-05

Pillow, an image processing library, fails to validate scaled output size before sending EPS files to Ghostscript for rendering. An attacker can upload a small EPS file that bypasses size checks, causing Pillow to render vastly larger images at higher scales, wasting CPU, temporary disk space, and potentially creating denial-of-service conditions for applications processing untrusted documents.

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

## Quick answers

**Is CVE-2026-112899 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112899 being exploited in the wild.

**How severe is CVE-2026-112899?** Medium severity, with a CVSS score of 4, published 5 November 2026.

**Which products and versions are affected?** Pillow before fix (affects all versions since 2.5.0); pillow (PyPI) >= 2.3.0, <= 12.3.0, ECOSYSTEM:introduced=2.3.0,fixed=13.0.0.

**Is there a fix for CVE-2026-112899?** Yes. pillow (PyPI): upgrade to 13.0.0 or later. Until then: Do not call load(scale=N) with N > 1 on untrusted EPS files, or restrict Ghostscript execution to trusted input only. Alternatively, convert the MAX_IMAGE_PIXELS warning to an error to catch oversized outputs after Ghostscript processing. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112899 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-112899?** Check whether you run Pillow or pillow (PyPI) 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"
  ```


Do not call load(scale=N) with N > 1 on untrusted EPS files, or restrict Ghostscript execution to trusted input only. Alternatively, convert the MAX_IMAGE_PIXELS warning to an error to catch oversized outputs after Ghostscript processing.

## Technical details

The vulnerability exists in EpsImagePlugin.Ghostscript() where the scaled pixel dimensions (width × scale, height × scale) are computed but never passed to Image._decompression_bomb_check() before invoking the Ghostscript subprocess. The only size check occurs in Image.open() on the unscaled dimensions; a file declaring 9000×9000 pixels (81 Mpx, below the default MAX_IMAGE_PIXELS) passes, but load(scale=2) requests 18000×18000 pixels (324 Mpx, 3.6× the limit) from Ghostscript, producing a 972 MB temporary file. The attack requires the application to call load(scale=N) with N > 1 on untrusted EPS files.

## Affected products

- Pillow Pillow before fix (affects all versions since 2.5.0)

## Identifiers

- CVE-2026-112899
- GHSA-vx6w-vv9f-6gvg

## Timeline

- 2026-10-20: disclosed: GHSA-vx6w-vv9f-6gvg published
- 2026-10-20: advisory

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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)
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