# CVE-2026-77075: n8n before 1.123.69 Expression Injection via Resource Locator

> Authenticated users can inject JavaScript via resource locator fields, leading to code execution in other users' sessions.

- **Severity:** High 8.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 20 Aug 2026
- **Updated:** 21 Aug 2026
- **Also known as:** GHSA-fh4c-9rr2-p7qc, GHSA-vp98-5689-mc9f, MINI-w7m9-pcmp-5gqp

## What is CVE-2026-77075?

CVE-2026-77075 is a high-severity code injection vulnerability in N8n N8n, published on 20 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an expression injection vulnerability in resource-locator field link preview rendering. The editor spliced the field's stored value directly into the node type's URL template without checking for expression syntax. An authenticated member can store a malicious value so that when another user opens the affected node in the editor, the injected expression is evaluated as JavaScript in the victim's authenticated session (cross-user script execution).

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

## Which versions are affected by CVE-2026-77075?

It affects 1 product.


Products: N8n N8n.

## How do I fix CVE-2026-77075?

Upgrade to a fixed version.

## Is CVE-2026-77075 being exploited?

There is no known exploitation of CVE-2026-77075 in the wild and no public exploit code.

## Other vulnerabilities in N8n N8n

- [CVE-2025-68613](https://insights.sbomify.com/CVE-2025-68613/): n8n Improper Control of Dynamically-Managed Code Resources (critical 10.0, exploited in the wild)
- [CVE-2026-21877](https://insights.sbomify.com/CVE-2026-21877/): n8n is vulnerable to Remote Code Execution via Arbitrary File Write (critical 10.0)
- [CVE-2026-21858](https://insights.sbomify.com/CVE-2026-21858/): n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling (critical 10.0)
- [CVE-2026-1470](https://insights.sbomify.com/CVE-2026-1470/): n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution (critical 9.9)
- [CVE-2025-68668](https://insights.sbomify.com/CVE-2025-68668/): n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-77075 and fix it if it is affected.

What it is: CVE-2026-77075 is a high-severity code injection vulnerability in N8n N8n, published on 20 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-77075 in the wild and no public exploit code.

Affected product: N8n N8n. 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-2026-77075/ (Markdown: https://insights.sbomify.com/CVE-2026-77075/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77075
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77075
- OSV: https://osv.dev/vulnerability/CVE-2026-77075

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-77075/
Summaries are generated and may contain mistakes; the official description above is the record.