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CVE-2025-3894

Stored XSS in MegaBIP

MEDIUM
4.8
CVSS Score
Published: May 23, 2025 at 10:20 AM UTC
Updated: June 17, 2026 at 09:20 AM UTC
1 product affected across 1 vendorMegaBIP

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MegaBIP· Jan Syski
60%
v ≤ 5.19

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Third Party Advisory
Source: [email protected]
https://cert.pl/en/posts/2025/05/CVE-2025-3893
Vendor Advisory
Source: [email protected]
https://megabip.pl/index.php?id=24,145
US Government Resource
Source: [email protected]
https://www.gov.pl/web/cyfryzacja/rekomendacja-pelnomocnika-rzadu-ds-cyberbezpieczenstwa-dotyczaca-biuletynow-informacji-publicznej

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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