# CVE-2026-78179: rexrainbow phaser3-rex-notes BehaviorTree Blackboard Data SetValue.js SetValue prototype pollution

> Remote attackers can exploit prototype pollution in the BehaviorTree Blackboard SetValue function to execute arbitrary code.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 24 Aug 2026
- **Also known as:** GHSA-p3p3-2chg-5xhx

## What is CVE-2026-78179?

CVE-2026-78179 is a medium-severity code injection vulnerability in rexrainbow phaser3-rex-notes, published on 24 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was identified in rexrainbow phaser3-rex-notes up to 1.80.17. This vulnerability affects the function SetValue of the file plugins/utils/object/SetValue.js of the component BehaviorTree Blackboard Data Interface. Such manipulation of the argument key leads to improperly controlled modification of object prototype attributes. The attack can be launched remotely.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-1321 (Improperly Controlled Modification of Object Prototype Attributes)

## Which versions are affected by CVE-2026-78179?


## How do I fix CVE-2026-78179?

No fix has been published for CVE-2026-78179 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78179 being exploited?

There is no known exploitation of CVE-2026-78179 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78179 and fix it if it is affected.

What it is: CVE-2026-78179 is a medium-severity code injection vulnerability in rexrainbow phaser3-rex-notes, published on 24 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78179 in the wild and no public exploit code.

Affected product: rexrainbow phaser3-rex-notes. 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-2026-78179/ (Markdown: https://insights.sbomify.com/CVE-2026-78179/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78179
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78179
- OSV: https://osv.dev/vulnerability/CVE-2026-78179

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78179/
Summaries are generated and may contain mistakes; the official description above is the record.