CVE-2022-31186

next-auth before v4.10.2 and v3.29.9 leaks excessive information into log

// Example
import log from "your-logging-service"
export const authOptions: NextAuthOptions = {
  debug: process.env.NODE_ENV !== "production",
  logger: {
    error: (code, metadata) => {
      if (!(metadata instanceof Error) &&  metadata.provider) {
        // redact the provider secret here
        delete metadata.provider
        log.error(code, metadata)
      } else {
        log.error(code, metadata)
      }
    }
  },
}

An information disclosure vulnerability in next-auth before v4.10.2 and v3.29.9 allows an attacker with log access privilege to obtain excessive information such as an identity provider's secret in the log (which is thrown during OAuth error handling) and use it to leverage further attacks on the system, like impersonating the client to ask for extensive permissions.

CVE-2022-31186 has a CVSS score of 3.3 (Low). The vector is requires local access, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (3.29.9, 4.10.2); upgrading removes the vulnerable code path.

Kodem intelligence

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We patched this vulnerability in v4.10.2 and v3.29.9 by moving the log for provider information to the debug level. In addition, we added a warning for having the debug: true option turned on in production and documented it here.

You have enabled the debug option. It is meant for development only, to help you catch issues in your authentication flow and you should consider removing this option when deploying to production. One way of only allowing debugging while not in production is to set debug: process.env.NODE_ENV !== "production", so you can commit this without needing to change the value.

If you want to log debug messages during production anyway, we recommend setting the logger option with proper sanitization of potentially sensitive user information.

To upgrade:

npm i next-auth@latest
# or
yarn add next-auth@latest
# or
pnpm add next-auth@latest

(This will update to the latest v4 version, but you can change latest to 3 if you want to stay on v3. This is not recommended. v3 is unmaintained.)

1. What is CVE-2022-31186? CVE-2022-31186 is a low-severity security vulnerability in next-auth (npm), affecting versions < 3.29.9. It is fixed in 3.29.9, 4.10.2.
2. How severe is CVE-2022-31186? CVE-2022-31186 has a CVSS score of 3.3 (Low). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of next-auth are affected by CVE-2022-31186? next-auth (npm) versions < 3.29.9 is affected.
4. Is there a fix for CVE-2022-31186? Yes. CVE-2022-31186 is fixed in 3.29.9, 4.10.2. Upgrade to this version or later.
5. Is CVE-2022-31186 exploitable, and should I be worried? Whether CVE-2022-31186 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2022-31186 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2022-31186?
   • Upgrade next-auth to 3.29.9 or later
   • Upgrade next-auth to 4.10.2 or later

Other vulnerabilities in next-auth