CVE-2020-13965
Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
- Medium 6.3
- Exploited: added to CISA KEV 26 Jun 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.
Key facts
- Published
- 9 Jun 2020
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 26 Jun 2024
- KEV fix due
- 17 Jul 2024
- EPSS
- 76.596% likely to be exploited in the next 30 days, higher than 99.55% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 6.3CVSS 3.1, Mediumfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 9 Jun 2020 Published
- 26 Jun 2024 CVE-2020-13965 added to CISA KEV
- 26 Jun 2024 Added to the CISA KEV catalogue