CVE-2026-63325

Arbitrary code execution via unsafe faker expression evaluation

Published Sep 16, 2026 · Updated Sep 18, 2026

Code injection in Redocly CLI before 2.33.0 allows attackers to execute arbitrary code through a crafted Arazzo description. The respect context parser dynamically evaluates $faker expressions and permits constructor, prototype, or proto traversal to reach the JavaScript Function constructor. Exploitation requires a user or CI job to run respect on untrusted content, after which code executes with the CLI process privileges and can run shell commands or read secrets.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Redocly CLI before 2.33.0 allows attackers to execute arbitrary code through a crafted Arazzo description. The respect context parser dynamically evaluates $faker expressions and permits constructor, prototype, or proto traversal to reach the JavaScript Function constructor. Exploitation requires a user or CI job to run respect on untrusted content, after which code executes with the CLI process privileges and can run shell commands or read secrets.

The record

CVE
CVE-2026-63325
Published
Sep 16, 2026
Updated
Sep 18, 2026
Vendor
Redocly
Product
Redocly CLI
Classifications
CWE-95, CWE-94, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.34.17
  2. Affected versionversion=>= 2.0.0, < 2.33.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Redocly · Redocly CLIversion=< 1.34.17; version=>= 2.0.0, < 2.33.0

Published CVSS scores

7.8GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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