CVE-2026-9857 Missing authorization in Invoice123
Authenticated subscribers can modify plugin settings and API keys due to missing authorization checks in the Invoice123 WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9857?
CVE-2026-9857 is a medium-severity missing authorization vulnerability in saskaita123 Invoice123, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Invoice123 plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the plugin's API key stored in wp_options, modify invoice plugin settings, and alter WooCommerce tax rate data in the wp_woocommerce_tax_rates table.
Weakness: CWE-862
Which versions are affected by CVE-2026-9857?
How do I fix CVE-2026-9857?
No fix has been published for CVE-2026-9857 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-9857 being exploited?
There is no known exploitation of CVE-2026-9857 in the wild and no public exploit code.
Sources
Also known as GHSA-q7j5-p4m6-7h8q.