PYSEC-2026-3453

vendorUSosv

view advisory published 2026-07-14Licence: CC-BY-4.0

Pillow is a Python imaging library. Prior to 12.3.0, Pillow's ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform's declared output mode. This issue is fixed in version 12.3.0.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-59205US	—	0.39% (32nd)	—	2026-07-14
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies…

references

External citations — patches, advisories, analysis.

https://github.com/python-pillow/Pillow/commit/a9ffc42bedf4fc0a7ef8d6486e7f9e81e3397721FIX
https://github.com/python-pillow/Pillow/pull/9715FIX
https://github.com/python-pillow/Pillow/releases/tag/12.3.0ADVISORY
https://github.com/python-pillow/Pillow/security/advisories/GHSA-9hw9-ch79-4vh6EVIDENCE

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