CVE-2020-13965

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-06-26. Federal remediation due 2024-07-17.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

76.60% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.5% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-06-09 02:45Z6 YR AGO

Last updated

2025-10-21 23:35Z10 MO AGO

Reserved

2020-06-09

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Weaknesses

• CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)Variant
• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

6860e4638f912dbab59e841b92d7899d3ade139382713a0153838a31dfd0e44d

• github.comhttps://github.com/roundcube/roundcubemail/releases/tag/1.4.5x_refsource_MISC
• github.comhttps://github.com/roundcube/roundcubemail/releases/tag/1.3.12x_refsource_MISC
• github.comhttps://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3x_refsource_MISC
• github.comhttps://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5x_refsource_MISC
• roundcube.nethttps://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12x_refsource_CONFIRM
• www.debian.orgDSA-4700https://www.debian.org/security/2020/dsa-4700vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2020-2a1a6a8432https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-aeffd92b77https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/vendor-advisoryx_refsource_FEDORA
• github.comhttps://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcubex_refsource_MISC
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965government-resource