# CVE-2026-59184: OpenEXR: OpenEXRUtil FlatImageChannel row nonzero dataWindow heap OOB write

> A crafted EXR file can trigger out-of-bounds or use-after-free writes in OpenEXR, potentially allowing code execution or crashes in applications processing untrusted images.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 25 Aug 2026
- **Updated:** 25 Aug 2026
- **Also known as:** AZL-97640, BELL-CVE-2026-59184, DEBIAN-CVE-2026-59184, ECHO-69d8-1d7c-ac7f, GHSA-pqp9-558c-453q, MINI-hvjc-3h83-28q4, ROOT-OS-DEBIAN-11-CVE-2026-59184, ROOT-OS-DEBIAN-12-CVE-2026-59184, ROOT-OS-DEBIAN-13-CVE-2026-59184, UBUNTU-CVE-2026-59184

## What is CVE-2026-59184?

CVE-2026-59184 is a high-severity memory corruption vulnerability in AcademySoftwareFoundation openexr, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allow a crafted EXR with a nonzero dataWindow.min to make TypedFlatImageChannel::row() return an invalid heap pointer, causing out-of-bounds or use-after-free writes. This occurs when an application writes rows through FlatHalfChannel::row(). Affected consumers are tools, converters, render pipeline components, or image-processing services that accept untrusted EXR files and use FlatHalfChannel::row() on loaded images. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Weakness: CWE-787 (Out-of-bounds Write), CWE-416 (Use After Free)

## Which versions are affected by CVE-2026-59184?


## How do I fix CVE-2026-59184?

Upgrade to a fixed version.

## Is CVE-2026-59184 being exploited?

There is no known exploitation of CVE-2026-59184 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59184 and fix it if it is affected.

What it is: CVE-2026-59184 is a high-severity memory corruption vulnerability in AcademySoftwareFoundation openexr, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-59184 in the wild and no public exploit code.

Affected product: AcademySoftwareFoundation openexr. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-59184/ (Markdown: https://insights.sbomify.com/CVE-2026-59184/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59184
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59184
- OSV: https://osv.dev/vulnerability/CVE-2026-59184

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59184/
Summaries are generated and may contain mistakes; the official description above is the record.