2 :80

Source shows
<!-- /nibbleblog/ directory. Nothing interesting here! -->

===============================================================
2021/05/04 13:22:16 Starting gobuster in directory enumeration mode
===============================================================
/sitemap.php          (Status: 200) [Size: 402]
/content              (Status: 301) [Size: 323] [--> http://10.10.10.75/nibbleblog/content/]
/index.php            (Status: 200) [Size: 2987]
/themes               (Status: 301) [Size: 322] [--> http://10.10.10.75/nibbleblog/themes/]
/feed.php             (Status: 200) [Size: 302]
/admin                (Status: 301) [Size: 321] [--> http://10.10.10.75/nibbleblog/admin/]
/admin.php            (Status: 200) [Size: 1401]
/plugins              (Status: 301) [Size: 323] [--> http://10.10.10.75/nibbleblog/plugins/]
/install.php          (Status: 200) [Size: 78]
/update.php           (Status: 200) [Size: 1622]
/README               (Status: 200) [Size: 4628]
/languages            (Status: 301) [Size: 325] [--> http://10.10.10.75/nibbleblog/languages/]
/LICENSE.txt          (Status: 200) [Size: 35148]
/COPYRIGHT.txt        (Status: 200) [Size: 1272]

http://10.10.10.75/nibbleblog/content/private/config.xml
<notification_email_to type="string">[e-mail]</notification_email_to>

http://10.10.10.75/nibbleblog/content/private/users.xml
<users>
<user username="admin">
<id type="integer">0</id>

http://10.10.10.75/nibbleblog/admin.php > login page

http://10.10.10.75/nibbleblog/install.php
Blog already installed... May be you want to update?

http://10.10.10.75/nibbleblog/update.php
DB updated: ./content/private/config.xml
DB updated: ./content/private/comments.xml
Categories updated...

Nibbleblog 4.0.3 "Coffee" ©2009 - 2014 | Developed by Diego Najar

trying out default creds:
admin:nibbles work