CVE-2020-21088

Name: CVE-2020-21088
Creator: NVD / NIST
Published: 2021-04-14T14:15:13.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2020-21088 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Cross Site Scripting (XSS) in X2engine X2CRM v7.1 and older allows remote attackers to obtain sensitive information by injecting arbitrary web script or HTML via the "First Name" and "Last Name" fields in "/index.php/contacts/create page". EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

Cross Site Scripting (XSS) in X2engine X2CRM v7.1 and older allows remote attackers to obtain sensitive information by injecting arbitrary web script or HTML via the "First Name" and "Last Name" fields in "/index.php/contacts/create page"

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.76%

50.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
X2engine	X2crm	<= 7.1

References

https://github.com/X2Engine/X2CRM/issues/161Exploit, Third Party Advisory
https://github.com/X2Engine/X2CRM/issues/183Exploit, Third Party Advisory
https://github.com/X2Engine/X2CRM/issues/161Exploit, Third Party Advisory
https://github.com/X2Engine/X2CRM/issues/183Exploit, Third Party Advisory

Timeline

Published: Apr 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21088?

How severe is CVE-2020-21088?

CVE-2020-21088 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21088?

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-2020-21088?

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

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Source: NVD / NIST