CVE-2026-9577 Post Status Notifier Lite < 1.13.0 - Reflected XSS via mod Parameter
Attackers can execute arbitrary scripts in an administrator's session via a crafted URL, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-9577?
CVE-2026-9577 is a medium-severity cross-site scripting vulnerability in Unknown Post Status Notifier Lite, published on 23 Jul 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Post Status Notifier Lite WordPress plugin before 1.13.0 does not properly escape the `mod` URL parameter before reflecting it into the admin settings page (`admin.php?page=post-status-notifier-lite`), leading to a Reflected Cross-Site Scripting vulnerability that fires in the administrator's session when they are tricked into following a crafted URL.
Weakness: CWE-79
Which versions are affected by CVE-2026-9577?
How do I fix CVE-2026-9577?
No fix has been published for CVE-2026-9577 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-9577 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9577 exists.
Sources
Also known as GHSA-x9fx-2h43-2prm.