CVE-2023-28848
4.8 · MEDIUMOverview
CVE-2023-28848 is a medium-severity vulnerability affecting nextcloud user_oidc. It was published on April 4, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
user_oidc is the OIDC connect user backend for Nextcloud, an open source collaboration platform. A vulnerability in versions 1.0.0 until 1.3.0 effectively allowed an attacker to bypass the state protection as they could just copy the expected state token from the first request to their second request. Users should upgrade user_oidc to 1.3.0 to receive a patch for the issue. No known workarounds are available.
Remediation
Check the references section for vendor advisories and patches from nextcloud. Update user_oidc 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 | user_oidc | >= 1.0.0, < 1.3.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-28848?
CVE-2023-28848 is a medium-severity vulnerability affecting nextcloud user_oidc. It was published on April 4, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).
How severe is CVE-2023-28848?
This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-28848?
Check the references section for vendor advisories and patches from nextcloud. Update user_oidc 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-2023-28848?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-28848 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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