CVE-2026-45278 — Nextcloud: Open Redirect in user_oidc login flow via protocol-relative URL bypass
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,…
Published: 2026-06-01 · CVSS: 3.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7