Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-13965

CVE-2020-13965MEDIUM

n/a n/a — Roundcube Webmail

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  L  L  L    6.3   .7660   99.5   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Jun 9   Reserved by mitre
  Jun 9   Published (CNA: mitre)
  Jun 26  Added to CISA KEV, remediation due 2024-07-17

CWE-80 · CNA: mitre · CVSS v3.1 · 10 references · KEV due July 17, 2024

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 9, 2020	Reserved	Reserved by mitre
June 9, 2020	Published	Published (CNA: mitre)
June 26, 2024	KEV ADDED	Added to CISA KEV, remediation due 2024-07-17

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-80

References (10)

https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube [x_refsource_MISC]
https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3 [x_refsource_MISC]
https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5 [x_refsource_MISC]
https://github.com/roundcube/roundcubemail/releases/tag/1.3.12 [x_refsource_MISC]
https://github.com/roundcube/roundcubemail/releases/tag/1.4.5 [x_refsource_MISC]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/ [vendor-advisory, x_refsource_FEDORA]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/ [vendor-advisory, x_refsource_FEDORA]
https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12 [x_refsource_CONFIRM]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965 [government-resource]
https://www.debian.org/security/2020/dsa-4700 [vendor-advisory, x_refsource_DEBIAN]

Authoritative record: CVE-2020-13965 at cve.org

Weaknesses: CWE-80

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-13965 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.