--- title: "CVE-2023-5631: Stored XSS vulnerability in Roundcube | CubePath" description: "Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because…" language: en source: https://cubepath.com/security/cve/CVE-2023-5631 --- # CVE-2023-5631: Stored XSS vulnerability in Roundcube | CubePath ## Description Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube\_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code. Official description from the CVE record, published by ESET. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-5631) ## Key data ### CVSS 3.1 Medium 6.1 Score published by ESET in the CVE record. CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | Metric | Value | What it means | | ---------------------- | -------- | ----------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Changed | The impact can reach other components beyond the vulnerable one. | | Confidentiality impact | Low | Limited effect on the secrecy of data. | | Integrity impact | Low | Limited effect on the trustworthiness of data. | | Availability impact | None | No effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.76337 (76.3% probability) Percentile 99.5% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability Added to the catalog Oct 26, 2023 Federal due date Nov 16, 2023 ### CISA assessment as of Nov 15, 2023 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-79](https://cwe.mitre.org/data/definitions/79.html) Improper Neutralization of Input During Web Page Generation ## Affected products Products listed in the CVE record, as the CNA published them. - Roundcubemail - affected: 1.6.0 up to before 1.6.3 - affected: 1.5.0 up to before 1.5.4 - affected: 1.4.0 up to before 1.5.14 - unaffected: 1.6.4 - unaffected: 1.5.5 - unaffected: 1.5.15 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2…](https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613) - [github.com/roundcube/roundcubemail/releases/tag/1.6.4](https://github.com/roundcube/roundcubemail/releases/tag/1.6.4) - [github.com/roundcube/roundcubemail/releases/tag/1.5.5](https://github.com/roundcube/roundcubemail/releases/tag/1.5.5) - [github.com/roundcube/roundcubemail/releases/tag/1.4.15](https://github.com/roundcube/roundcubemail/releases/tag/1.4.15) - [github.com/roundcube/roundcubemail/issues/9168](https://github.com/roundcube/roundcubemail/issues/9168) - [roundcube.net/news/2023/10/16/security-update-1.6.4-released](https://roundcube.net/news/2023/10/16/security-update-1.6.4-released) - [github.com/roundcube/roundcubemail/commit/41756cc3331b495cc…](https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d) - [roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.…](https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15) - [bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079) - [debian.org/security/2023/dsa-5531](https://www.debian.org/security/2023/dsa-5531) - [lists.debian.org/debian-lts-announce/2023/10/msg00035.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html) - [openwall.com/lists/oss-security/2023/11/01/1](http://www.openwall.com/lists/oss-security/2023/11/01/1) - [openwall.com/lists/oss-security/2023/11/01/3](http://www.openwall.com/lists/oss-security/2023/11/01/3) - [lists.fedoraproject.org/archives/list/package-announce@list…](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4/) - [openwall.com/lists/oss-security/2023/11/17/2](http://www.openwall.com/lists/oss-security/2023/11/17/2) ## Timeline 1. ID reserved Oct 18, 2023 2. Record published Oct 18, 2023 3. Added to CISA KEV Oct 26, 2023 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:25 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)