nagios4: Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 contain a cross-site request forgery protection bypass via a...
CVE-2026-48551 is fixed in nagios4 on 1 platform, first by DEBIAN-CVE-2026-48551, released August 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 contain a cross-site request forgery protection bypass via a self-supplied double-submit cookie. An attacker can supply matching cookie and request parameter values to bypass CSRF protection, enabling unauthenticated attackers to run commands as authorized users via malicious links.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nagios4 · Debian 12.15 (bookworm) | 4.4.6-4+deb12u2 | DEBIAN-CVE-2026-48551 | Aug 12, 2026 |
| nagios4 · Debian 13.5 (trixie) | 4.4.6-4.1+deb13u2 | DEBIAN-CVE-2026-48551 | Aug 12, 2026 |
| nagios4 · Debian 14 | 4.5.14+ds-1 | DEBIAN-CVE-2026-48551 | Aug 12, 2026 |
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