# CVE-2026-55413: ToolJet - Marketplace Plugin Poisoning Enables Instance-Wide Remote Code Execution

> Authenticated builders can inject malicious JavaScript into shared marketplace plugins, enabling server-side remote code execution across the entire instance.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **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:** 25 Jun 2026
- **Updated:** 25 Jun 2026
- **Also known as:** GHSA-jgmf-cw3v-r98x

## What is CVE-2026-55413?

CVE-2026-55413 is a critical code injection vulnerability in ToolJet, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ToolJet is the open-source foundation am AI-native platform for building and deploying internal tools, workflows and AI agents. Prior to 3.20.178-lts, any authenticated user with builder role (free tier) can overwrite a globally-shared marketplace plugin with arbitrary JavaScript that executes server-side with full Node.js access (require, process). The malicious code runs whenever any user on the instance triggers a query using that plugin — achieving both RCE and supply-chain compromise of the entire ToolJet deployment. This vulnerability is fixed in 3.20.178-lts.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-55413?


## How do I fix CVE-2026-55413?

No fix has been published for CVE-2026-55413 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55413 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55413 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55413 and fix it if it is affected.

What it is: CVE-2026-55413 is a critical code injection vulnerability in ToolJet, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55413 exists.

Affected product: ToolJet. 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-2026-55413/ (Markdown: https://insights.sbomify.com/CVE-2026-55413/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55413
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55413
- OSV: https://osv.dev/vulnerability/CVE-2026-55413

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55413/
Summaries are generated and may contain mistakes; the official description above is the record.