CVE-2021-26916

Name: CVE-2021-26916
Creator: NVD / NIST
Published: 2021-02-08T22:15:12.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-26916 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. In nopCommerce 4.30, a Reflected XSS issue in the Discount Coupon component allows remote attackers to inject arbitrary web script or HTML through the Filters/CheckDiscountCouponAttribute.cs discountcode parameter.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

In nopCommerce 4.30, a Reflected XSS issue in the Discount Coupon component allows remote attackers to inject arbitrary web script or HTML through the Filters/CheckDiscountCouponAttribute.cs discountcode parameter.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.10%

61.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nopcommerce	Nopcommerce	4.30

References

https://github.com/nopSolutions/nopCommerce/issues/5322Exploit, Third Party Advisory
https://github.com/nopSolutions/nopCommerce/issues/5322Exploit, Third Party Advisory

Timeline

Published: Feb 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26916?

How severe is CVE-2021-26916?

CVE-2021-26916 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26916?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26916?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST