CVE-2019-13389 — RainLoop Webmail before 1

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-03-20T00:00:00.000Z
• Last modified: 2024-08-04T23:49:24.981Z

09References

• github.com — https://github.com/RainLoop/rainloop-webmail/commit/8eb4588917b4741889fdd905d4c3…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00027.html