CVE-2020-13965

MEDIUMNVD 6.19.0▲Trending — 5 sources updated this weekExploited in the wild

6.1

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.

CVSS v3: 6.1
EG Score: 9.0(high)
EPSS: 98.8%
KEV: ⚠ Exploited

Published

June 9, 2020

Last Modified

November 4, 2025

References (19)

cve@mitrehttps://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube
cve@mitrehttps://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3
cve@mitrehttps://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5
cve@mitrehttps://github.com/roundcube/roundcubemail/releases/tag/1.3.12
cve@mitrehttps://github.com/roundcube/roundcubemail/releases/tag/1.4.5
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/
cve@mitrehttps://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12
cve@mitrehttps://www.debian.org/security/2020/dsa-4700
af854a3a-2127-422b-91ae-364da2661108https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube
af854a3a-2127-422b-91ae-364da2661108https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3
af854a3a-2127-422b-91ae-364da2661108https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5
af854a3a-2127-422b-91ae-364da2661108https://github.com/roundcube/roundcubemail/releases/tag/1.3.12
af854a3a-2127-422b-91ae-364da2661108https://github.com/roundcube/roundcubemail/releases/tag/1.4.5
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	roundcube-sqlite3 (1.2~beta+dfsg.1-0ubuntu1+esm2) @ xenial	2026-06-01	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

UbuntuUSN-5182-1HIGH
Roundcube Webmail vulnerabilities

Data Freshness Timeline

(refreshed 16× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-01 00:06 UTCEG score recompute
2026-06-01 00:06 UTCVendor advisory
2026-06-01 00:06 UTCGHSA enrichment
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 22:20 UTCkev_newly_listed
2026-05-29 13:42 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 20:35 UTCkev_newly_listed
2026-05-27 13:39 UTCepss_batch
2026-05-26 19:16 UTCEG score recompute
2026-05-26 19:16 UTCVendor advisory
2026-05-26 19:16 UTCGHSA enrichment
2026-05-26 19:13 UTCkev_newly_listed
2026-05-23 06:01 UTCOSV refresh

Frequently asked(6)

What is CVE-2020-13965?

CVE-2020-13965 is a medium vulnerability published on June 9, 2020. 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.

When was CVE-2020-13965 disclosed?

CVE-2020-13965 was first published in the National Vulnerability Database on June 9, 2020, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-13965 actively exploited?

Yes. CISA added CVE-2020-13965 to the Known Exploited Vulnerabilities catalog on June 26, 2024, affecting Roundcube Webmail. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-13965?

CVE-2020-13965 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2020-13965?

CVE-2020-13965 affects Roundcube Webmail. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-13965?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-13965, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-13965

Explore →

Is Your Infrastructure Affected by CVE-2020-13965?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2020-13965

Published

Last Modified

References (19)

Patch Availability(1)

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-13965?

Same vendor

Same CWE

CVE-2020-13965

📅 Published

🔄 Last Modified

🔗 References (19)

Patch Availability(1)

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-13965?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (19)

Frequently asked(6)

Related CVEs(same vendor + same CWE)