CVE-2020-13893 — MEDIUM (5.4)

Vulnerability Description

Multiple stored cross-site scripting (XSS) vulnerabilities in Sage EasyPay 10.7.5.10 allow authenticated attackers to inject arbitrary web script or HTML via multiple parameters through Unicode Transformations (Best-fit Mapping), as demonstrated by the full-width variants of the less-than sign (%EF%BC%9C) and greater-than sign (%EF%BC%9E).

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Sage	Easypay	10.7.5.10

Related Weaknesses (CWE)

CWE-79

References

https://gist.github.com/picar0jsu/4532a6d15e8f8d7597b7dca5136ad655Third Party Advisory
https://www.sage.com/en-sg/products/sage-easypay/ProductVendor Advisory
https://gist.github.com/picar0jsu/4532a6d15e8f8d7597b7dca5136ad655Third Party Advisory
https://www.sage.com/en-sg/products/sage-easypay/ProductVendor Advisory

FAQ

What is CVE-2020-13893?

CVE-2020-13893 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Multiple stored cross-site scripting (XSS) vulnerabilities in Sage EasyPay 10.7.5.10 allow authenticated attackers to inject arbitrary web script or HTML via multiple parameters through Unicode Transf...

How severe is CVE-2020-13893?

CVE-2020-13893 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-13893?

Check the references section above for vendor advisories and patch information. Affected products include: Sage Easypay.