Is CVE-2026-112896 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-112896 being exploited in the wild.

How severe is CVE-2026-112896?

High severity, with a CVSS score of 4, published 19 October 2026.

Which products and versions are affected?

pillow (PyPI) <= 12.3.0, ECOSYSTEM:introduced=0,fixed=13.0.0; Python Pillow Pillow prior to 13.0.0.

Is there a fix for CVE-2026-112896?

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-2026-112896 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-112896?

Check whether you run pillow (PyPI) or Python Pillow 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.

CVE-2026-112896: Pillow TIFF encoder buffer over-read in ColorMap

Q: Which products and versions are affected?

pillow (PyPI) <= 12.3.0, ECOSYSTEM:introduced=0,fixed=13.0.0; Python Pillow Pillow prior to 13.0.0.

Q: Is there a fix for CVE-2026-112896?

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.

Q: How is CVE-2026-112896 attacked?

It is attacked with local access, in a software library.

Q: Am I affected by CVE-2026-112896?

Check whether you run pillow (PyPI) or Python Pillow 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.

CVE-2026-112896 · Severity: high · CVSS 4 · Published 2026-10-19

Pillow is a Python library for image processing. A flaw in how it handles TIFF image metadata can cause the encoder to read past the bounds of a color map buffer when processing specially crafted TIFF files. This could disclose sensitive data from memory or crash the application processing the image.

Technologies: pillow (PyPI), Python Pillow Pillow. Vendors: PyPI, Python Pillow.

Quick answers

Is CVE-2026-112896 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-112896 being exploited in the wild.
How severe is CVE-2026-112896?: High severity, with a CVSS score of 4, published 19 October 2026.
Which products and versions are affected?: pillow (PyPI) <= 12.3.0, ECOSYSTEM:introduced=0,fixed=13.0.0; Python Pillow Pillow prior to 13.0.0.
Is there a fix for CVE-2026-112896?: 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-2026-112896 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-112896?: Check whether you run pillow (PyPI) or Python Pillow 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
```
pip install "pillow>=13.0.0"
```

Technical details

The TIFF encoder in Pillow prior to 13.0.0 fails to validate that retained ColorMap metadata is sized consistently with BitsPerSample, allowing an out-of-bounds read when a small TIFF with a crafted ColorMap is re-encoded. An attacker can craft a TIFF file that, when opened normally and then saved by the application, triggers heap memory disclosure or process crash during re-encoding.

Affected products

Python Pillow Pillow prior to 13.0.0

Identifiers

CVE-2026-112896
BIT-PILLOW-2026-112896
GHSA-pchr-8j38-3x4p
PYSEC-2026-4334

Timeline

2026-10-19: disclosed
2026-10-16: patched

References

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