NULL Pointer Dereference Affecting pillow package, versions [12.0.0, 12.3.0)
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-21277781
- published20 Oct 2026
- disclosed19 Oct 2026
- creditJoshua Rogers
Introduced: 19 Oct 2026
NewCVE-2026-112405 (opens in a new tab)How to fix?
Upgrade pillow to version 12.3.0 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference via the ImagingMerge function in src/libImaging/Bands.c when merging image32 (4-bytes-per-pixel, single-band) images. The function fails to reject bands whose pixelsize is 4, allowing an attacker to trigger a crash by supplying such images to a merge operation.