CVE-2020-13965
Roundcube Webmail: Cross-Site Scripting (XSS)
As of , CVE-2020-13965 in Roundcube Webmail is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 26 June 2024
- US federal deadline
- 17 July 202421 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.77Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.00 on 26 June 2024EPSS on the day CISA listed it.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- Vendor advice: roundcube.netLinks below, from CISA's entry.
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA's required action
What the flaw is
Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to manipulate data via a malicious XML attachment.
CISA's 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.
The CVE record's description, from mitre
- CVE published
- 9 June 2020
- Assigned by
- mitre
- CVSS
- 6.3 Medium (CVSS 3.1, from CISA-ADP)
- CWE-80
- Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- partial
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Webmail: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2025-49113Deserialization of Untrusted Data | Roundcube Webmail | Patch this weekMetasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2024-42009Cross-Site Scripting | Roundcube Webmail | Patch this weekEPSS 0.83 | 0.83 | ||
| CVE-2024-37383Cross-Site Scripting (XSS) | Roundcube Webmail | Patch this weekEPSS 0.73 | 0.73 | ||
| CVE-2023-43770Persistent Cross-Site Scripting (XSS) | Roundcube Webmail | Patch this weekEPSS 0.64 | 0.64 | ||
| CVE-2023-5631Persistent Cross-Site Scripting (XSS) | Roundcube Webmail | Patch this weekEPSS 0.76 | 0.76 | ||
| CVE-2025-68461Cross-site Scripting | Roundcube Webmail | Patch soon | 0.27 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org