Use of Uninitialized Variable Affecting pillow package, versions [9.1.0,13.0.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PILLOW-21277776
- published20 Oct 2026
- disclosed19 Oct 2026
- creditUnknown
Introduced: 19 Oct 2026
NewCVE-2026-112898 (opens in a new tab)How to fix?
Upgrade pillow to version 13.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Variable in the topalette function in src/libImaging/Convert.c when quantize() is called with an empty palette. An attacker can trigger an unhandled error condition by supplying a palette with zero entries, causing the function to proceed into palette cache operations with an empty palette and crashing the process.