Pillow affected by out-of-bounds write when loading PSD images
### Impact An out-of-bounds write may be triggered when loading a specially crafted PSD image. Pillow >= 10.3.0 users are affected. ### Patches Pillow 12.1.1 will be released shortly with a fix for this. ### Workarounds `Image.open()` has a `formats` parameter that can be used to prevent PSD images from being opened. ### References Pillow 12.1.1 will add release notes at https://pillow.readthedocs.io/en/stable/releasenotes/index.html
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-25990US | high7.5 | — | ||
Pillow is a Python imaging library. From 10.3.0 to before 12.1.1, an out-of-bounds write may be triggered when loading a specially crafted PSD image. This vulnerability is fixed in… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/python-pillow/PillowPACKAGE
- https://github.com/python-pillow/Pillow/commit/54ba4db542ad3c7b918812a4e2d69c27735a3199WEB
- https://github.com/python-pillow/Pillow/commit/9000313cc5d4a31bdcdd6d7f0781101abab553aaWEB
- https://github.com/python-pillow/Pillow/pull/9427WEB
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-cfh3-3jmp-rvhcWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-25990ADVISORY
- https://pillow.readthedocs.io/en/stable/releasenotes/12.1.1.htmlWEB
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