HTTP ERROR 500 on Login to 7.2.3 after vulnerability scan

Hi

I ran a Net Vulnerability scan on my vulnerability scanner (OpenVAS) on my network and it seems that it has done something to Unraid's Web Engine as I am unable to log into it, producing error 500.
https://www.cyberly.org/en/what-are-openvas-nvts-network-vulnerability-tests/index.html

I have tried stopping and starting PHP and NGINX and neither have resolved the issue.

/etc/rc.d/rc.nginx restart

/etc/rc.d/rc.nginx reload

/etc/rc.d/rc.php-fpm restart

#Emhttp

pkill -f /usr/libexec/unraid/emhttpd
#Killed the runtime states
rm -rf /var/lib/nginx/*

rm -rf /var/local/emhttp/*

rm -rf /var/tmp/nginx*

r#estarted emhttp

/usr/libexec/unraid/emhttpd &

192.168.0.31 is the OpenVas Server

It does not have credentials for Unraid, so this is all unauthenticated scanning, which has in the past not caused any issues, although I the last scan was on V7 and the scanning engine has updated a lot since then

I see messages in syslog where it has been attempting to connect to discovery any vulnerabilities, but seems have have cause some failure in the nginx web engine.the web engine is up but any attempt to log in with valid or invalid credentials results in HTTP 500 error Login via Putty is ok.

fallout sshd[159784]: srclimit_penalise: ipv4: new 192.168.0.31/32 deferred penalty of 1 seconds for penalty: connections without attempting authentication

Feb 10 12:57:01 fallout kernel: svc: svc_tcp_read_marker nfsd RPC fragment too large: 612067950

Feb 10 13:05:34 fallout nginx: 2026/02/10 13:05:34 [error] 14023#14023: *738238 open() "/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components/uui/forms/login.fcc" failed (2: No such file or directory) while sending to client, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/uui/forms/login.fcc HTTP/1.1", host: "fallout.removed_TLD"

Feb 10 13:05:49 fallout nginx: 2026/02/10 13:05:49 [error] 14023#14023: *738259 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/includes/include.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "fallout"

Feb 10 13:05:49 fallout nginx: 2026/02/10 13:05:49 [error] 14023#14023: *738259 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/uui/includes/include.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "fallout"

Feb 10 13:05:49 fallout nginx: 2026/02/10 13:05:49 [error] 14023#14023: *738266 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/includes/include.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "fallout.removed_TLD"

Feb 10 13:05:49 fallout nginx: 2026/02/10 13:05:49 [error] 14023#14023: *738266 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/uui/includes/include.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "fallout.removed_TLD"

Feb 10 13:05:51 fallout nginx: 2026/02/10 13:05:51 [error] 14023#14023: *738277 open() "/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components/standalone/logon_senha.asp" failed (2: No such file or directory) while sending to client, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/logon_senha.asp HTTP/1.1", host: "fallout"

Feb 10 13:05:51 fallout nginx: 2026/02/10 13:05:51 [error] 14023#14023: *738277 open() "/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components/uui/logon_senha.asp" failed (2: No such file or directory) while sending to client, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/uui/logon_senha.asp HTTP/1.1", host: "fallout"

Feb 10 13:05:52 fallout nginx: 2026/02/10 13:05:52 [error] 14023#14023: *738284 open() "/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components/standalone/logon_senha.asp" failed (2: No such file or directory) while sending to client, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/logon_senha.asp HTTP/1.1", host: "fallout.removed_TLD"

Feb 10 13:05:52 fallout nginx: 2026/02/10 13:05:52 [error] 14023#14023: *738284 open() "/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components/uui/logon_senha.asp" failed (2: No such file or directory) while sending to client, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/uui/logon_senha.asp HTTP/1.1", host: "fallout.removed_TLD"

Feb 10 13:07:19 fallout nginx: 2026/02/10 13:07:19 [error] 14023#14023: *738545 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/settings.php.swp HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "fallout"

Feb 10 13:07:19 fallout nginx: 2026/02/10 13:07:19 [error] 14023#14023: *738545 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 192.168.0.31, server: , request: "GET /plugins/dynamix.my.servers/unraid-components/standalone/settings.php.save HTTP/1.1", upstream:

Just sending in-case someone else has had something similar or knows another way to resuscitate the web engine, rather than me performing a powerdown -r.

fallout-diagnostics-20260210-1854.zip

Edited February 11Feb 11 by hwextreme