CVE-2026-45278
3.3 · LOWOverview
CVE-2026-45278 is a low-severity vulnerability affecting nextcloud user_oidc. It was published on June 1, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Nextcloud is an open source content collaboration platform. From version 6.1.0 to before version 8.2.2, an attacker can craft links that would redirect users to another website, when the victim uses the attackers link to log in via user OIDC. This issue has been patched in version 8.2.2.
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 | >= 6.1.0, < 8.2.2 | Affected |
Frequently Asked Questions
What is CVE-2026-45278?
CVE-2026-45278 is a low-severity vulnerability affecting nextcloud user_oidc. It was published on June 1, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).
How severe is CVE-2026-45278?
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-45278?
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-2026-45278?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-45278 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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