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Vulnerability record · CVE-2026-75000 · published 17 August 2026

CVE-2026-75000: Roundcube webmail vulnerability

Roundcube · Webmail

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper HTML/CSS sanitization of the SVG animate "by" attribute may lead to remote image blocking bypass, which in turn may lead to information disclosure or privilege escalation.

5.8 CVSS 3.1 Medium EPSS 0.47% · top 61.5% CWE-669 · CWE-669
5.8CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
8 Sep 2026Last modified by NVD

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper HTML/CSS sanitization of the SVG animate "by" attribute may lead to remote image blocking bypass, which in turn may lead to information disclosure or privilege escalation.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 Release Notes
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-75000), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.