XSS in Roundcube Webmail
CVE-2020-35730
An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by linkref_addi…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.328 (98.2th 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
- Fedoraproject Fedora — versions 32, 33
- 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 updates per vendor instructions.
Public proof-of-concept exploits
References
- cve@mitre.org (Product, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (x_refsource_CONFIRM, Mailing List, Issue Tracking)
- cve@mitre.org (x_refsource_MISC, Broken Link)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory, Mailing List, Release Notes)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory, Mailing List, Release Notes)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-35730?
- CVE-2020-35730 is a medium-severity vulnerability in Roundcube Webmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-12-28.
- How severe is CVE-2020-35730?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-35730 known to be exploited?
- Yes. CVE-2020-35730 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-22), indicating it is being actively exploited. 9 public proof-of-concept repositories are indexed.