CVE-2020-13965An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5.
Updated under an hour ago ()
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It affects roundcube webmail and 2 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jun 26, 2024; federal agencies had to remediate by Jul 17, 2024. Treat that date as your deadline.
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Free account, 1 product
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
- 6.3 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-80
- Known exploited
- Added to CISA KEV Jun 26, 2024; federal remediation due Jul 17, 2024Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 76.60% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
roundcube webmail roundcube:webmail | before 1.3.12 | CISA ADP |
roundcube webmail roundcube:webmail | before 1.3.12; from 1.4.0 before 1.4.5 | NVD |
debian debian_linux debian:debian_linux | 9.0; 10.0 | NVD |
fedoraproject fedora fedoraproject:fedora | 31; 32 | NVD |
References
- https://github.com/roundcube/roundcubemail/releases/tag/1.4.5x-refsource-misc, release-notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.12x-refsource-misc, release-notes
- https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3x-refsource-misc, patch, third-party-advisory
- https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5x-refsource-misc, patch
- https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12x-refsource-confirm, vendor-advisory
- https://www.debian.org/security/2020/dsa-4700vendor-advisory, x-refsource-debian, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/vendor-advisory, x-refsource-fedora, mailing-list
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/vendor-advisory, x-refsource-fedora, mailing-list
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcubex-refsource-misc, exploit, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.