XSS in Jan Syski Megabip
CVE-2025-3894
Text editor embedded into MegaBIP software does not neutralize user input allowing Stored XSS attacks on other users. In order to use the editor high privileges are required. Version 5.20 of MegaBIP fixes this issue.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
EPSS exploit prediction
EPSS: 0.004 (34.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.7% 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
- Jan Syski Megabip — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cert.pl/en/posts/2025/05/CVE-2025-3893 (third-party-advisory)
- megabip.pl/index.php (vendor-advisory)
- www.gov.pl/web/cyfryzacja/rekomendacja-pelnomocnika-rzadu-ds-cyberbezpieczenstw… (government-resource)
Frequently asked questions
- What is CVE-2025-3894?
- CVE-2025-3894 is a vulnerability in Jan Syski Megabip, classified under Cross-site Scripting. Published 2025-05-23.
- Is CVE-2025-3894 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.