CVE-2023-5631 on CISA KEV
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
CISA KEV — Actively Exploited
Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
Vendor / Product
— / Roundcube / Webmail
CVSS / EPSS
6.1 MEDIUM · EPSS 83.43%
01What CISA says about this vulnerability
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
02Required action — verbatim from CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
03Notes & references
- github.com — https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf755…
- github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.6.4
- github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.5.5
- github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.4.15
- github.com — https://github.com/roundcube/roundcubemail/issues/9168
- roundcube.net — https://roundcube.net/news/2023/10/16/security-update-1.6.4-released
- github.com — https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474…
- roundcube.net — https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15
- bugs.debian.org — https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079
- www.debian.org — https://www.debian.org/security/2023/dsa-5531
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html
- www.openwall.com — http://www.openwall.com/lists/oss-security/2023/11/01/1
- www.openwall.com — http://www.openwall.com/lists/oss-security/2023/11/01/3
- lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/[email protected]…
- www.openwall.com — http://www.openwall.com/lists/oss-security/2023/11/17/2
04SARA's analyst layer — why this matters
This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.
05Affected products (summary)
| Vendor | Product | Versions |
|---|
| Roundcube | Roundcubemail | 1.6.0, 1.5.0, 1.4.0, 1.6.4, 1.5.5, 1.5.15 |
06Detection
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