CVE-2020-35730 KEV
6.1
MEDIUM · CVSS 3.1 · EPSS 32.7% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2023-07-13.
Description
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_addindex in rcube_string_replacer.php.
Scoring
| CVSS | 6.1 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| EPSS | 32.69% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-79 |
| On CISA KEV | yes — remediate by 2023-07-13 |
| Public exploit | none known |
| Published | 2020-12-28 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability |
|---|---|
| Added | 2023-06-22 |
| Due | 2023-07-13 |
| Vendor / product | Roundcube / Roundcube Webmail |
| Ransomware use | none reported |
Affected (3)
| Vendor | Product |
|---|---|
| debian | debian linux |
| fedoraproject | fedora |
| roundcube | webmail |
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978491
- https://github.com/roundcube/roundcubemail/compare/1.4.9...1.4.10
- https://github.com/roundcube/roundcubemail/releases/tag/1.2.13
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.16
- https://github.com/roundcube/roundcubemail/releases/tag/1.4.10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCEU4BM5WGIDJWP6Z4PCH62ZMH57QYM2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HMLIZWKMTRCLU7KZLEQHELS4INXJ7X5Q/
- https://roundcube.net/download/
- https://www.alexbirnberg.com/roundcube-xss.html
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978491
- https://github.com/roundcube/roundcubemail/compare/1.4.9...1.4.10
- https://github.com/roundcube/roundcubemail/releases/tag/1.2.13
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.16
- https://github.com/roundcube/roundcubemail/releases/tag/1.4.10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCEU4BM5WGIDJWP6Z4PCH62ZMH57QYM2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HMLIZWKMTRCLU7KZLEQHELS4INXJ7X5Q/
- https://roundcube.net/download/
- https://www.alexbirnberg.com/roundcube-xss.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-35730
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