CVE-2026-121998 iChart < 2.2.4 - Subscriber+ Arbitrary Post Read, Update and Deletion via IDOR
Subscriber-level users can read, modify and delete arbitrary posts and overwrite site options via iChart AJAX actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-121998?
CVE-2026-121998 is a high-severity missing authorization vulnerability in Unknown iChart, published on 11 Nov 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The iChart WordPress plugin before 2.2.4 does not perform capability or ownership checks in several of its AJAX actions, relying only on a nonce that any logged-in user can obtain, allowing users with a role as low as Subscriber to read, modify and permanently delete arbitrary posts and to overwrite a site-wide option.
Weakness: CWE-639
Which versions are affected by CVE-2026-121998?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-121998?
No fix has been published for CVE-2026-121998 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-2026-121998 being exploited?
There is no known exploitation of CVE-2026-121998 in the wild and no public exploit code.
Sources
Also known as GHSA-p7p5-59x2-5569.