What is CVE-2022-38339?

CVE-2022-38339 is a critical-severity vulnerability in Safe Fme Server, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2022-09-19.

How severe is CVE-2022-38339?

Critical severity. CVSS v3 base score is 9.6 out of 10.

XSS in Safe Fme Server

CVE-2022-38339

Safe Software FME Server v2021.2.5, v2022.0.0.2 and below contains a cross-site scripting (XSS) vulnerability which allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the login page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Safe Fme Server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

community.safe.com/s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-Vulnera… (Vendor Advisory)
www.cycura.com/blog/safe-software-inc-fme-server-vulnerability-disclosure/ (Product)

Frequently asked questions

What is CVE-2022-38339?: CVE-2022-38339 is a critical-severity vulnerability in Safe Fme Server, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2022-09-19.
How severe is CVE-2022-38339?: Critical severity. CVSS v3 base score is 9.6 out of 10.