# CVE-2026-43908: OpenImageIO integer overflow in ConvertCbYCrYToRGB

Source: https://junglewise.ai/threats/cve-2026-43908-openimageio-integer-overflow-in-convertcbycrytorgb  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-14. Updated: 2026-05-15  
License: CC BY 4.0 with a link back

CVE-2026-43908 · Severity: high · CVSS 8.8 · Published 2026-05-14

OpenImageIO is a widely used library for processing image files in the visual effects and animation industries. A vulnerability in how it handles specific image formats allows a specially crafted image file to crash the software or potentially allow unauthorized access to data. This could disrupt production pipelines or compromise systems that automatically process user-uploaded images.

Technologies: [Academy Software Foundation OpenImageIO](https://junglewise.ai/threats/technologies/openimageio). Vendors: [Academy Software Foundation](https://junglewise.ai/threats/vendors/academy-software-foundation).

## Quick answers

**Is CVE-2026-43908 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43908 being exploited in the wild.

**How severe is CVE-2026-43908?** High severity, with a CVSS score of 8.8, published 14 May 2026.

**Which products and versions are affected?** Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0, <= 3.2.0.1-dev.

**Is there a fix for CVE-2026-43908?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-43908 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-43908?** Check whether you run Academy Software Foundation OpenImageIO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A signed 32-bit integer overflow exists in the ConvertCbYCrYToRGB() function within the DPX 4:2:2 decoder of OpenImageIO. The vulnerability is triggered when the pixel-loop index expression 'i * 3' exceeds the maximum value for a 32-bit signed integer (INT_MAX), which occurs when processing very large images (where Width * Height exceeds approximately 715 million pixels). This overflow results in a large negative pointer offset during an output buffer write operation, leading to a heap-based out-of-bounds write and a subsequent segmentation fault. An attacker can exploit this by providing a maliciously crafted DPX image file. The issue is fixed in versions 3.0.18.0 and 3.1.13.0.

## Affected products

- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0, <= 3.2.0.1-dev

## Timeline

- 2026-05-03: advisory: GitHub security advisory published by maintainers
- 2026-05-14: disclosed: CVE-2026-43908 published

## References

- [https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-2jr5-q49v-3858](https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-2jr5-q49v-3858)

## Related threats

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- [OpenImageIO heap overflow in TIFF CMYK decoding](https://junglewise.ai/threats/cve-2026-67549-openimageio-is-a-toolset-for-reading-writing-and-manipulating)
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- [OpenImageIO integer overflow in GIF palette splitting](https://junglewise.ai/threats/cve-2026-65969-openimageio-is-a-toolset-for-reading-writing-and-manipulating)
- [OpenImageIO heap overflow in cineon image parsing](https://junglewise.ai/threats/cve-2026-63638-openimageio-is-a-toolset-for-reading-writing-and-manipulating)