CVE-2026-87797 Client Invoicing by Sprout Invoices < 20.8.16 - Subscriber+ Private Note Overwrite via si_edit_private_note
Authenticated users can overwrite private notes on other users' records due to missing capability checks in the Sprout Invoices 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-2026-87797?
CVE-2026-87797 is a medium-severity missing authorization vulnerability in Unknown Sprout Invoices, published on 12 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Sprout Invoices WordPress plugin before 20.8.16 does not perform a capability or ownership check before allowing a private note to be overwritten through one of its AJAX actions, allowing any authenticated user such as a subscriber to overwrite private notes on records belonging to other users.
Weakness: CWE-862
Which versions are affected by CVE-2026-87797?
How do I fix CVE-2026-87797?
No fix has been published for CVE-2026-87797 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-2026-87797 being exploited?
There is no known exploitation of CVE-2026-87797 in the wild and no public exploit code.
Sources
Also known as GHSA-ff5j-g23h-37gw.