CVE-2026-43906

Description

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a heap-based buffer overflow in the HEIF decoder of OpenImageIO allows out-of-bounds writes via crafted images due to a subimage metadata mismatch, leading to memory corruption and potential code execution. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.04%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
openimageio	openimageio	< 3.0.18.0
openimageio	openimageio	3.1.4.0 — 3.1.13.0
openimageio	openimageio	All

References

Advisories & Patches

https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-gmrp-x952-3m66 https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-gmrp-x952-3m66

Exploits

https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-gmrp-x952-3m66 https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-gmrp-x952-3m66

Frequently Asked Questions

What is CVE-2026-43906? +

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a heap-based buffer overflow in the HEIF decoder of OpenImageIO allows out-of-bounds writes via crafted images due to a subimage metadata mismatch, leading to memory corruption and potential code execution. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-43906? +

CVE-2026-43906 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43906? +

CVE-2026-43906 affects products from openimageio, specifically: openimageio. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43906? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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