CVE-2026-88826 SmugMug Embed <= 3.13 - Unauthenticated Stored XSS via saveSelectedAlbums
Unauthenticated attackers can inject malicious scripts via AJAX actions that execute when administrators view the plugin settings.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-88826?
CVE-2026-88826 is a high-severity cross-site scripting vulnerability in Unknown SmugMug Embed, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The SmugMug Embed WordPress plugin through 3.13 does not have authorisation or CSRF checks on an AJAX action that stores gallery data, and does not sanitise or escape that data before outputting it, allowing unauthenticated users to store arbitrary web scripts that execute when an administrator views the SmugMug Embed WordPress plugin through 3.13's settings screen.
Weakness: CWE-79
Which versions are affected by CVE-2026-88826?
How do I fix CVE-2026-88826?
No fix has been published for CVE-2026-88826 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-2026-88826 being exploited?
There is no known exploitation of CVE-2026-88826 in the wild and no public exploit code.
Sources
Also known as GHSA-pgv8-gvc5-v6h7.