What is CVE-2019-13389?

CVE-2019-13389 is a medium-severity vulnerability in Rainloop Webmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-20.

How severe is CVE-2019-13389?

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

XSS in Rainloop Webmail

CVE-2019-13389

RainLoop Webmail before 1.13.0 lacks XSS protection mechanisms such as xlink:href validation, the X-XSS-Protection header, and the Content-Security-Policy header.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-03-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.5th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Rainloop Webmail

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/RainLoop/rainloop-webmail/commit/8eb4588917b4741889fdd905d4c32e3e863… (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/05/msg00027.html (mailing-list)

Frequently asked questions

What is CVE-2019-13389?: CVE-2019-13389 is a medium-severity vulnerability in Rainloop Webmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-20.
How severe is CVE-2019-13389?: Medium severity. CVSS v3 base score is 6.1 out of 10.