What’s Vulnerable › Vulnerabilities

CVE-2026-63325: Redocly CLI: Arbitrary code execution via Arazzo `$faker` expression using `respect`

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-24
• Weakness: CWE-94

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.

Affected products

• redocly-cli: before 1.34.17; from 2.0.0, < 2.33.0

References

• https://github.com/Redocly/redocly-cli/commit/d26d452368066be1400f43cea915dd9ea508e18b
• https://github.com/Redocly/redocly-cli/pull/2881
• https://github.com/Redocly/redocly-cli/pull/2922
• https://github.com/Redocly/redocly-cli/releases/tag/@redocly/respect-core@1.34.17
• https://github.com/Redocly/redocly-cli/releases/tag/@redocly/respect-core@2.33.0
• https://github.com/Redocly/redocly-cli/security/advisories/GHSA-xw2f-5386-m542

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