Medium severity · published Aug 17, 2026
CVE-2026-75000
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…
5.8
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webmail · Roundcube
1.6.0 before 1.6.18; 1.7.0 before 1.7.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75000
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75000
Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
Vendor Advisory
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
More from Webmail
9.8
CVE-2021-44026
Roundcube Webmail SQL Injection Vulnerability
9.8
CVE-2020-12641
Roundcube Webmail Remote Code Execution Vulnerability
9.3
CVE-2024-42009
RoundCube Webmail Cross-Site Scripting Vulnerability
8.8
CVE-2025-49113
RoundCube Webmail Deserialization of Untrusted Data Vulnerability
7.8
CVE-2017-16651
Roundcube Webmail File Disclosure Vulnerability