CVE-2022-39338
3.5 · LOWOverview
CVE-2022-39338 is a low-severity vulnerability affecting nextcloud openid_connect_user_backend. It was published on November 25, 2022 and has a CVSS 3.1 base score of 3.5 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.
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-2022-39338?
CVE-2022-39338 is a low-severity vulnerability affecting nextcloud openid_connect_user_backend. It was published on November 25, 2022 and has a CVSS 3.1 base score of 3.5 (LOW).
How severe is CVE-2022-39338?
This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2022-39338?
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-2022-39338?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-39338 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.
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