CVE-2025-48308 Cross-site scripting in Newsletter subscription optin module
Attackers can inject malicious scripts via CSRF in the Newsletter subscription optin module, potentially compromising user sessions and site integrity.
- 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-2025-48308?
CVE-2025-48308 is a high-severity cross-site scripting vulnerability in nonletter Newsletter subscription optin module, published on 28 Aug 2025. 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
Cross-Site Request Forgery (CSRF) vulnerability in nonletter Newsletter subscription optin module newsletter-subscription-widget-for-sendblaster allows Stored XSS.This issue affects Newsletter subscription optin module: from n/a through <= 1.2.9.
Weakness: CWE-352
Which versions are affected by CVE-2025-48308?
How do I fix CVE-2025-48308?
No fix has been published for CVE-2025-48308 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-2025-48308 being exploited?
There is no known exploitation of CVE-2025-48308 in the wild and no public exploit code.
Sources
Also known as GHSA-8g3m-w37g-r89v.