CVE-2026-63225 Redocly CLI: Path traversal when using `split` command
Attackers can use crafted OpenAPI or AsyncAPI files to write or overwrite files outside the intended output directory via the split command.
- 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
What is CVE-2026-63225?
CVE-2026-63225 is a medium-severity path traversal vulnerability in redocly-cli, published on 16 Sep 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
Redocly CLI makes OpenAPI validation, linting, and documentation workflows easier. Prior to @redocly/cli 2.33.2, the split command constructs output paths under --outDir from untrusted OpenAPI or AsyncAPI component names and x-codeSamples lang values without verifying that the resolved target remains inside the selected directory. A description containing literal ../ traversal segments in those fields can cause the split command to place or overwrite files outside --outDir. Component data remains constrained to YAML or JSON, and code-sample filenames remain based on the HTTP method, so this is not an unrestricted arbitrary-content file write. This issue is fixed in @redocly/cli version 2.33.2.
Which versions are affected by CVE-2026-63225?
4 open source packages ship an affected version, including @redocly/cli.
| Package | Affected | Fixed in |
|---|---|---|
@redocly/cli npm | All versions | 1.34.17 |
@redocly/cli npm | All versions | 1.34.17 |
@redocly/cli npm | From 2.0.0 | 2.33.2 |
@redocly/cli npm | From 2.0.0 | 2.33.2 |
How do I fix CVE-2026-63225?
Upgrade @redocly/cli to a fixed version for your release line: 1.34.17 or 2.33.2.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-63225 being exploited?
There is no known exploitation of CVE-2026-63225 in the wild and no public exploit code.
Sources
Also known as GHSA-657c-g7qc-r9j2.