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CVE-2020-13965

Roundcube Webmail Cross-Site Scripting (XSS)

6.1 MEDIUMActively exploited (CISA KEV)Public exploitEPSS 76.6%
  1. Published9 Jun 2020
  2. Added to CISA KEV26 Jun 2024
  3. Remediation due17 Jul 2024
Actively exploited (CISA KEV)

Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to manipulate data via a malicious XML attachment.

Added to KEV: 26 Jun 2024Federal remediation due: 17 Jul 2024

Description

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

Roundcube Webmail≥ 1.4.0 < 1.4.5 · < 1.3.12
Debian Linux10.0 · 9.0
Fedoraproject Fedora31 · 32

Remediation

Fixed in
Roundcube Webmail≥ 1.4.5

References

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Frequently asked

Is CVE-2020-13965 being actively exploited?

Yes. CVE-2020-13965 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 26 Jun 2024.

How severe is CVE-2020-13965?

CVE-2020-13965 has a CVSS 3.1 base score of 6.1, rated medium. EPSS estimates a 76.6% probability of exploitation.

Which products are affected by CVE-2020-13965?

Affected products include Roundcube Webmail, Debian Linux, Fedoraproject Fedora.

How do I fix CVE-2020-13965?

Upgrade affected software to a fixed version, for example Roundcube Webmail 1.4.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-13965 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.