Description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, A crafted fits stream containing consecutive 2880-byte header blocks without the mandatory end keyword makes fitsinput::read_fits_header() call itself without a depth bound. repeated recursive parsing exhausts the application stack, resulting in denial of service. The affected implementation is identified by src/fits.imageio/fitsinput.cpp, FitsInput::read_fits_header(), END keyword, and 2880-byte FITS header blocks, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.
Affected products
openimageio: openimageio
References6
- github.com/AcademySoftwareFoundation/OpenImageIO/security/advis… ExploitMitigationVendor Advisory
- github.com/AcademySoftwareFoundation/OpenImageIO/security/advis… ExploitMitigationVendor Advisory
- github.com/AcademySoftwareFoundation/OpenImageIO/commit/b0de7d4… Patch
- github.com/AcademySoftwareFoundation/OpenImageIO/pull/5248 Issue TrackingPatch
- github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v… Release Notes
- github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v… Release Notes
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 30 · as of 8 November 2026
- CWE
- CWE-674
Could this be exploited in your environment?
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