# All in One Invite Codes <= 1.2.0 - Authenticated (Subscriber+) Missing Authorization to Sending Invites via Other Users' Invite Codes

- **ID:** WPSEC-2026-0593
- **Plugin:** All in One Invite Codes (`all-in-one-invite-codes`), https://wordpress.org/plugins/all-in-one-invite-codes/
- **Affected versions:** all versions before 1.3.0
- **Fixed in:** 1.3.0 (Update to 1.3.0 or later.)
- **Severity:** Medium 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **Weakness:** CWE-862
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-07)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/all-in-one-invite-codes
- **Fix released:** 2026-10-03
- **Published:** 2026-10-07
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0593/

## Description

The All in One Invite Codes plugin for WordPress is vulnerable to unauthorized access and modification of data due to a missing ownership check on the invite-sending AJAX action in all versions up to, and including, 1.2.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to have another user's invite code e-mailed to an address of their choosing, obtaining that code and binding it to that address if it was not yet assigned.

## References

- https://wpsec.com/vuln/WPSEC-2026-0593/
- https://plugins.svn.wordpress.org/all-in-one-invite-codes/tags/1.3.0/
- https://wordpress.org/plugins/all-in-one-invite-codes/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0593/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.