XSS in Microweber
CVE-2025-51503
A Stored Cross-Site Scripting (XSS) vulnerability in Microweber CMS 2.0 allows attackers to inject malicious scripts into user profile fields, leading to arbitrary JavaScript execution in admin browsers.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Microweber — versions 2.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/progprnv/CVE-Reports/blob/main/MICROWEBER [Admin Panel] Stored XSS i… (Broken Link)
- github.com/progprnv/CVE-Reports (Third Party Advisory)
- github.com/progprnv/CVE-Reports/blob/main/CVE-2025-51503 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-51503?
- CVE-2025-51503 is a high-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2025-07-31.
- How severe is CVE-2025-51503?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2025-51503 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.