2
votes
1answer
63 views

Security around save_post hook

There are a lot of examples using the save_post hook, that include adding and verifying a nonce, and checking the user has appropriate permissions before you continue. Is this necessary? When ...
1
vote
1answer
158 views

Is wp_nonce_field vulnerable if you know the action name?

Is wp_nonce_field vulnerable if you know the action name? I am actually adding a hidden field with name = the name of the action name in my form so that my plugin can identify it. I want to know if ...
0
votes
1answer
25 views

Is it necessary to use a WordPress nonce when allowing users to download public data?

I am using jQuery .load() to load the next page of WordPress posts after a button is clicked. The next page of posts is public data (no access restrictions on it whatsoever). Should I use a WordPress ...
0
votes
0answers
115 views

Nonces and Cache

It's clear that form submissions and AJAX requests, especially sensible ones, need "nonces" to avoid certain exploits. However, with heavy use of caching systems it becomes harder to generate them ...
2
votes
1answer
215 views

Confusion on WP Nonce usage in my Plugin

I created a small plugin where users can set multiple featured image by clicking Add New link from the meta box and remove them as well. The user can use Set featured image link to select featured ...
0
votes
1answer
44 views

Why do Metabox use Nonces?

Why is it advised for admin panel metaboxes to use nonces? Every example I see of creation and saving metabox data there are nonces involved but aren't nonces a bit unnecessary in this case?
1
vote
1answer
60 views

Security checking in meta_box save is reluctant?

For example, in this tutorial, the code suggested when saving meta box data is /* Verify the nonce before proceeding. */ if ( !isset( $_POST['smashing_post_class_nonce'] ) || !wp_verify_nonce( ...
3
votes
2answers
99 views

Is it safe to assume that a nonce may be validated more than once?

From what I have gathered, once a nonce is generated it is valid for reuse for the next 48 hours. Is it safe to code with this in mind? I'm writing a plugin that does a bit of toing and froing with ...
3
votes
1answer
207 views

Nonces can be reused multiple times? Bug / Security issue?

I've read that nonces are meant to be for one time use only, and after an ajax request, you should issue a new nonce so with the next ajax request, a new nonce would be sent to the server. However, I ...
1
vote
0answers
412 views

Security - Ajax and Nonce use [closed]

I'm developing a site which posts a number of ajax calls from jquery to PHP and returns data from PhP to jquery. Everything is working, but i'd to know if my approach to handling the calls is ok, in ...
10
votes
1answer
1k views

wp_verify_nonce vs check_admin_referer

What is the difference, which one should I use? I know that wp_verify_nonce checks the time limit, and check_admin_referer I think calls wp_verify_nonce as well as checking for an admin url segment, ...
1
vote
2answers
532 views

wp_nonce_field displaying twice

I have wp_nonce_field in my code but it's creating two instances to the html code for some reason, one where I'd expect it and another at the start of the entry. Is this correct or am I doing ...
8
votes
2answers
668 views

Are Nonces Useless?

This is probably a noob question BUT hear me out - isn't the point of using Nonce to protect from things like scrappers (phpcurl scrappers etc.)? But my Nonce prints out in the head of the document ...
4
votes
1answer
999 views

Multiple ajax nonce requests

I have a feature in my current project that will be allow multiple ajax requests - I've got a single nonce request worked out (via this tute), but am somewhat unsure how to figure in multiple nonce ...