CVE-2020-12640 — Roundcube Webmail before 1

Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php.

01What is this vulnerability?

Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php.

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: 2020-05-04T14:58:28.000Z
• Last modified: 2024-08-04T12:04:22.314Z

09References

• github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.4.4
• github.com — https://github.com/roundcube/roundcubemail/compare/1.4.3...1.4.4
• roundcube.net — https://roundcube.net/news/2020/04/29/security-updates-1.4.4-1.3.11-and-1.2.10
• github.com — https://github.com/roundcube/roundcubemail/commit/814eadb699e8576ce3a78f21e95bf6…
• github.com — https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-12640-PHP%20Lo…
• security.gentoo.org — https://security.gentoo.org/glsa/202007-41
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html