CVE-2020-13965An 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…
- 6.3MediumCVSS base score
- 76.6%Exploitation in 30 daysEPSS · top 0.4% of all CVEs
- YesKnown exploitedin CISA's KEV since 26 Jun 2024
- YesPublic exploitsa reference or SSVC says so
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability.
- Added
- 26 Jun 2024
- Fix due (US federal)
- 17 Jul 2024
- Used by ransomware
- Not known
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 26 Jun 2024.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By mitre
Published
- 4 years later
· 4 years later
Added to CISA KEV
Known exploited in the wild
- 16 months later
· 16 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Analyzed | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 76.6% · top 0.4% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
n/a
- affected n/a
References
References10
- https://github.com/roundcube/roundcubemail/releases/tag/1.4.5 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.12 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5 (opens in a new tab)x_refsource_MISCx_transferred
- https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4700 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2020-2a1a6a8432 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-aeffd92b77 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-6139 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-13965)Record last updated .