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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Roundcube Webmail unaffected
Version Status Constraints
1.6.0 affected < 1.6.18
1.7.0 affected < 1.7.3

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 cve-icon cve-icon
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 cve-icon cve-icon
History

Mon, 17 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 17 Aug 2026 15:15:00 +0000

Type Values Removed Values Added
Title SVG Animate Attribute Sanitization Leading to Remote Image Blocking Bypass in Roundcube Webmail

Mon, 17 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
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.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-669
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-17T14:59:34.936Z

Reserved: 2026-08-17T12:45:56.473Z

Link: CVE-2026-75000

cve-icon Vulnrichment

Updated: 2026-08-17T14:35:42.597Z

cve-icon NVD

Status : Received

Published: 2026-08-17T13:16:54.580

Modified: 2026-08-17T15:16:59.447

Link: CVE-2026-75000

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-17T16:15:04Z

Weaknesses