CVE-2026-63325 Redocly CLI: Arbitrary code execution via Arazzo `$faker` expression using `respect`
Attackers can execute arbitrary code and read secrets by tricking users into processing malicious Arazzo descriptions with the Redocly CLI.
- 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
- None listed
What is CVE-2026-63325?
CVE-2026-63325 is a high-severity code injection 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 version 2.33.0 of @redocly/respect-core and @redocly/cli, the respect command dynamically evaluates $faker runtime expressions in Arazzo descriptions. A crafted expression can traverse constructor, prototype, or __proto__ properties in packages/respect-core/src/modules/context-parser/get-value-from-context.ts, reach the JavaScript Function constructor, and execute arbitrary code when a user processes an untrusted description. The executed code runs with the privileges of the CLI process and can execute shell commands or read CI secrets. Users processing only trusted, self-authored workflows are not affected. This issue is fixed in @redocly/respect-core and @redocly/cli version 2.33.0.
Which versions are affected by CVE-2026-63325?
How do I fix CVE-2026-63325?
No fix has been published for CVE-2026-63325 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-63325 being exploited?
There is no known exploitation of CVE-2026-63325 in the wild and no public exploit code.
Sources
Also known as GHSA-xw2f-5386-m542.