Roundcube up to 1.6.17/1.7.2 cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in Roundcube up to 1.6.17/1.7.2. The impacted element is an unknown function. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-75000. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Roundcube up to 1.6.17/1.7.2. Affected is an unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is available at roundcube.net. This vulnerability is traded as CVE-2026-75000 since 08/17/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 341564 (Debian dla-4760 : roundcube - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.6.18 or 1.7.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (341564) and CERT Bund (WID-SEC-2026-2880). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Open Source Roundcube

Productinfo

Type

• Mail Client Software

Name

• Roundcube

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 1.6.10
• 1.6.11
• 1.6.12
• 1.6.13
• 1.6.14
• 1.6.15
• 1.6.16
• 1.6.17
• 1.7.0
• 1.7.1
• 1.7.2

License

• free

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

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Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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