Authenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to execute codeby injecting arbitrary web s…

published 2021-04-28 5y ago modified 2026-06-17 4mo ago also EUVD-2020-15547

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

Authenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to execute codeby injecting arbitrary web script or HTML via modifying the name of the users. The XSS is executed when an administrator access the logs.

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Exploit prediction

1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

mexicanpentester.com https://mexicanpentester.com/2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

mexicanpentester.com /2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/
exploit, third-party-advisory
community.safe.com /s/article/fme-server-2019-security-update
vendor-advisory
community.safe.com /s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-Vulnerabilities
vendor-advisory

Sources

CVE List CVE-2020-22790
NVD CVE-2020-22790

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