CVE-2025-51504 Microweber XSS Vulnerability in the homepage Endpoint
Attackers can inject malicious scripts via the last name field in Microweber CMS, potentially leading to session hijacking or code execution.
- 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-2025-51504?
CVE-2025-51504 is a high-severity cross-site scripting vulnerability in Microweber Microweber, published on 1 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Microweber CMS 2.0 is vulnerable to Cross Site Scripting (XSS)in the /projects/profile, homepage endpoint via the last name field.
Weakness: CWE-79
Which versions are affected by CVE-2025-51504?
2 open source packages ship an affected version, including microweber/microweber. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
microweber/microweber Packagist | From 2.0.0 to 2.0.19 | None |
microweber/microweber Packagist | From 2.0.0 to 2.0.19 | None |
Products include Microweber Microweber.
How do I fix CVE-2025-51504?
No fix has been published for CVE-2025-51504 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-2025-51504 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51504 exists.
Other vulnerabilities in Microweber Microweber
- CVE-2022-0558 Cross-site Scripting (XSS) - Stored in microweber/microweber
- CVE-2020-23138 File upload in n/a
- CVE-2022-0688 Business Logic Errors in microweber/microweber
- CVE-2022-0660 Generation of Error Message Containing Sensitive Information in microweber/microweber
- CVE-2022-0913 Integer Overflow or Wraparound in microweber/microweber
Sources
Also known as GHSA-2x2j-3c2v-g3c2.