CVE-2020-22789

Name: CVE-2020-22789
Creator: NVD / NIST
Published: 2021-04-28T21:15:08.743+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2020-22789 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Unauthenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to gain admin privileges by injecting arbitrary web script or HTML via the login page. The XSS is executed when an administrator accesses the logs.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

Unauthenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to gain admin privileges by injecting arbitrary web script or HTML via the login page. The XSS is executed when an administrator accesses the logs.

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

1.24%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Safe	Fme Server	2019.0	—
Safe	Fme Server	2019.1	—
Safe	Fme Server	2019.2	Beta
Safe	Fme Server	2020.0	Beta

References

https://community.safe.com/s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-VulnerabilitiesVendor Advisory
https://community.safe.com/s/article/fme-server-2019-security-updateVendor Advisory
https://mexicanpentester.com/2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/Exploit, Third Party Advisory
https://community.safe.com/s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-VulnerabilitiesVendor Advisory
https://community.safe.com/s/article/fme-server-2019-security-updateVendor Advisory
https://mexicanpentester.com/2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/Exploit, Third Party Advisory

Timeline

Published: Apr 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22789?

How severe is CVE-2020-22789?

CVE-2020-22789 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22789?

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-2020-22789?

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

Scan your code now

Source: NVD / NIST