CVE-2025-9857 Heateor Login – Social Login Plugin <= 1.1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting
Authenticated contributors can inject arbitrary scripts via shortcode attributes, leading to stored XSS execution for other users.
- 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-2025-9857?
CVE-2025-9857 is a medium-severity cross-site scripting vulnerability in Heateor Login – Social Login Plugin, published on 10 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Heateor Login – Social Login Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'Heateor_Facebook_Login' shortcode in all versions up to, and including, 1.1.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2025-9857?
How do I fix CVE-2025-9857?
No fix has been published for CVE-2025-9857 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-2025-9857 being exploited?
There is no known exploitation of CVE-2025-9857 in the wild and no public exploit code.
Sources
Also known as GHSA-p8mj-fx4m-c3r8.