What is CVE-2018-20369?

CVE-2018-20369 is a medium-severity vulnerability in Barracuda Message Archiver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-12-23.

How severe is CVE-2018-20369?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Barracuda Message Archiver

CVE-2018-20369

Barracuda Message Archiver 2018 has XSS in the error_msg exception-handling value for the ldap_user parameter to the cgi-mod/ldap_load_entry.cgi module. The injection point of the issue is the Add_Update module.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Barracuda Message Archiver — versions 2018

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20369?: CVE-2018-20369 is a medium-severity vulnerability in Barracuda Message Archiver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-12-23.
How severe is CVE-2018-20369?: Medium severity. CVSS v3 base score is 6.1 out of 10.