AcademySoftwareFoundation OpenImageIO up to 3.2.0.3-beta0 Fits Input fitsinput.cpp read_fits_header stack-based overflow

Summaryinfo

A vulnerability was found in AcademySoftwareFoundation OpenImageIO up to 3.2.0.3-beta0 and classified as problematic. This affects the function FitsInput::read_fits_header of the file fitsinput.cpp of the component Fits Input Handler. Such manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2026-59156. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in AcademySoftwareFoundation OpenImageIO up to 3.2.0.3-beta0. Affected by this issue is the function FitsInput::read_fits_header of the file fitsinput.cpp of the component Fits Input Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-59156 since 07/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 3.0.20.0, 3.1.15.0 or 3.2.0.3-beta1 eliminates this vulnerability.

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Productinfo

Vendor

• AcademySoftwareFoundation

Name

• OpenImageIO

Version

• 3.2.0.3-beta0

License

• open-source

Website

• Product: https://github.com/AcademySoftwareFoundation/OpenImageIO/

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