Stored XSS in MegaBIP
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Jan Syski MegaBIP — megabip.pl/index.php?id=24,145
3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2025-03442 Low token entropy in MegaBIPPriority MEDIUM 48
- TI-2025-03440 SQL Injection in MegaBIPPriority LOW 39
Timeline
- 2026-10-02 Threatist record created from CVE-2025-3894
- 2026-10-03 Alias added: GHSA-xqr2-347w-52hc
References
More Jan Syski vulnerabilities
- TI-2024-01473 Remote Code Execution in MegaBIP CVSS 4.0CRITICAL 9.3
- TI-2024-01542 Arbitrary File Upload in MegaBIP CVSS 4.0CRITICAL 9.3
- TI-2024-01472 SQL Injection in MegaBIP CVSS 4.0CRITICAL 9.3
- TI-2025-03442 Low token entropy in MegaBIP CVSS 4.0CRITICAL 9.1
- TI-2024-06053 SQL Injection in MegaBIP CVSS 4.0CRITICAL 9.3
- TI-2024-05709 SQL Injection in MegaBIP CVSS 4.0CRITICAL 9.3
Sources
- CVE-2025-3894 · CVE Program
- CVE-2025-3894 · NVD
- FIRST EPSS
- GHSA-xqr2-347w-52hc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences