XSS in Mezereon Smart Search And Filter
CVE-2025-55998
A cross-site scripting (XSS) vulnerability in Smart Search & Filter Shopify and BigCommerce apps allows a remote attacker to execute arbitrary JavaScript in the web browser of a user, by including a malicious payload into several filter parameter
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Mezereon Smart Search And Filter — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mezereon.com/shopify/ (Product)
- github.com/Ocmenog/CVE-2025-55998 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55998?
- CVE-2025-55998 is a high-severity vulnerability in Mezereon Smart Search And Filter, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2025-09-08.
- How severe is CVE-2025-55998?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2025-55998 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.