pillow: Pillow is a Python imaging library
CVE-2026-40192 is fixed in 4 products on 1 platform, first by python3-pil 12.1.1-2ubuntu1.1, released April 16, 2026. It is not reported as exploited. Patch Radar priority: High.
Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pillow · Debian 13.5 (trixie) | 11.1.0-5+deb13u2 | DEBIAN-CVE-2026-40192 | May 15, 2026 |
| pillow · Debian 14 | 12.2.0-1 | DEBIAN-CVE-2026-40192 | May 15, 2026 |
| python-Pillow · opensuse-leap 16.0 | 11.3.0-160000.4.1 | OPENSUSE-SU-2026:20617-1 | Apr 22, 2026 |
| python3-pil · Ubuntu 25.10 (questing) | 11.3.0-1ubuntu1.2 | python3-pil 11.3.0-1ubuntu1.2 | May 15, 2026 |
| python3-pil · Ubuntu 26.04.1 LTS (resolute) | 12.1.1-2ubuntu1.1 | python3-pil 12.1.1-2ubuntu1.1 | Apr 16, 2026 |
| python3-pil.imagetk · Ubuntu 25.10 (questing) | 11.3.0-1ubuntu1.2 | python3-pil.imagetk 11.3.0-1ubuntu1.2 | May 15, 2026 |
| python3-pil.imagetk · Ubuntu 26.04.1 LTS (resolute) | 12.1.1-2ubuntu1.1 | python3-pil.imagetk 12.1.1-2ubuntu1.1 | Apr 16, 2026 |
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