Vulnerability in Academysoftwarefoundation Openimageio
CVE-2026-59156
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Academysoftwarefoundation Openimageio — versions < 3.0.20.0, >= 3.1.0.0, < 3.1.15.0, >= 3.2.0.0-dev, < 3.2.0.3-beta1
- Openimageio — versions 3.2.0.0, 3.2.0.2
Weakness classification (CWE)
References
- github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-xvwr-… (Exploit, Mitigation, Vendor Advisory)
- github.com/AcademySoftwareFoundation/OpenImageIO/pull/5248 (Patch, Issue Tracking)
- github.com/AcademySoftwareFoundation/OpenImageIO/commit/b0de7d40d06eb4abc7ef14c… (Patch)
- github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.20.0 (Release Notes)
- github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.15.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-59156?
- CVE-2026-59156 is a medium-severity vulnerability in Academysoftwarefoundation Openimageio, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-09-18.
- How severe is CVE-2026-59156?
- Medium severity. CVSS v3 base score is 6.5 out of 10.