# CVE-2026-110734: Memory corruption in Godot Engine

> A heap out-of-bounds write in the Radiance HDR image decoder allows attackers to execute arbitrary code via a crafted .hdr file.

- **Severity:** Low 2.5 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 24 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-110734, GHSA-mcg2-p5jm-qfx6, UBUNTU-CVE-2026-110734

## What is CVE-2026-110734?

CVE-2026-110734 is a low-severity memory corruption vulnerability in godotengine Godot Engine, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Godot Engine through 4.7.2 has a heap out-of-bounds write in the Radiance HDR (.hdr) image decoder (modules/hdr/image_loader_hdr.cpp). The run-length decoding loop expands RLE instructions read from the file into a buffer sized from the image dimensions, without validating that an instruction's repeat/copy count fits the remaining capacity of the row buffer. A crafted .hdr file therefore writes attacker-supplied bytes past the end of the heap allocation, with the overflow length and content controlled by the file. The defect is reached automatically when the product imports a crafted .hdr (e.g., when opening a project containing one), and at runtime in exported projects that load untrusted .hdr images. NOTE: the Supplier's position is that the research has identified "no security issues" because the required attacker access is outside of the current Godot Engine threat model.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-110734?


## How do I fix CVE-2026-110734?

No fix has been published for CVE-2026-110734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110734 being exploited?

There is no known exploitation of CVE-2026-110734 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110734 and fix it if it is affected.

What it is: CVE-2026-110734 is a low-severity memory corruption vulnerability in godotengine Godot Engine, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-110734 in the wild and no public exploit code.

Affected product: godotengine Godot Engine. 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-2026-110734/ (Markdown: https://insights.sbomify.com/CVE-2026-110734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110734
- OSV: https://osv.dev/vulnerability/CVE-2026-110734

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-110734/
Summaries are generated and may contain mistakes; the official description above is the record.