Unrated severityNVD Advisory· Published Jun 24, 2026· Updated Jun 24, 2026
OpenColorIO vulnerable to stack buffer overflow via unbounded `sscanf %s` in Spi3D (.spi3d) LUT parser
CVE-2026-42450
Description
OpenColorIO is a color management framework for visual effects and animation. Prior to version 2.5.2, FileFormatSpi3D.cpp:163 uses sscanf with %s into 64-byte stack buffers when parsing LUT data lines. Input comes from lineBuffer[4096], so a crafted .spi3d file can overflow by ~4000 bytes on non-Windows. Version 2.5.2 fixes the issue.
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Affected products
1- Range: <2.5.2
Patches
Vulnerability mechanics
References
2- github.com/AcademySoftwareFoundation/OpenColorIO/releases/tag/v2.5.2mitrex_refsource_MISC
- github.com/AcademySoftwareFoundation/OpenColorIO/security/advisories/GHSA-rxp3-rrgx-f547mitrex_refsource_CONFIRM
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