XSS in Roundcube Webmail
CVE-2020-13965
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.766 (99.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Roundcube Webmail
- Debian Debian_linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 31, 32
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Release Notes)
- cve@mitre.org (x_refsource_MISC, Release Notes)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory, Mailing List)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory, Mailing List)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-13965?
- CVE-2020-13965 is a medium-severity vulnerability in Roundcube Webmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-06-09.
- How severe is CVE-2020-13965?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-13965 known to be exploited?
- Yes. CVE-2020-13965 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-06-26), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.