XSS in Roundcube Webmail
CVE-2020-15562
An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. It allows XSS via a crafted HTML e-mail message, as demonstrated by a JavaScript payload in the xmlns (aka XML namespace) attribute of a HEAD element when an SVG element exists.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.021 (81.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Roundcube Webmail
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/roundcube/roundcubemail/releases/tag/1.4.7 (Third Party Advisory, Release Notes)
- github.com/roundcube/roundcubemail/releases/tag/1.3.14 (Third Party Advisory, Release Notes)
- github.com/roundcube/roundcubemail/releases/tag/1.2.11 (Third Party Advisory, Release Notes)
- github.com/roundcube/roundcubemail/commit/3e8832d029b035e3fcfb4c75839567a9580b4… (Patch, Third Party Advisory)
- www.debian.org/security/2020/dsa-4720 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html (vendor-advisory, Broken Link)
Frequently asked questions
- What is CVE-2020-15562?
- CVE-2020-15562 is a medium-severity vulnerability in Roundcube Webmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-07-06.
- How severe is CVE-2020-15562?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-15562 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.