CVE-2022-39339
4.3 · MEDIUMOverview
CVE-2022-39339 is a medium-severity vulnerability affecting nextcloud openid_connect_user_backend. It was published on November 25, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account security. This issue has been addressed in in user_oidc v1.2.1. Users are advised to upgrade. Users unable to upgrade may use https to access Nextcloud. Set an HTTPS discovery URL in the provider settings (in Nextcloud OIDC admin settings).
Remediation
Check the references section for vendor advisories and patches from nextcloud. Update openid_connect_user_backend to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nextcloud | openid_connect_user_backend | >= 0, < 1.2.1 | Affected |
References
Frequently Asked Questions
What is CVE-2022-39339?
CVE-2022-39339 is a medium-severity vulnerability affecting nextcloud openid_connect_user_backend. It was published on November 25, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2022-39339?
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-39339?
Check the references section for vendor advisories and patches from nextcloud. Update openid_connect_user_backend to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-39339?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-39339 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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