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CVE-2026-75003
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, an unclosed url() in a FuncIRI attribute of an SVG image could evade the remote image blocking, which may lead to information disclosure or privilege escalation.
9.8 CRITICALEPSS 0.40%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 5.8 | MEDIUM | 3.1mitre (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
Details
- CVE ID
- CVE-2026-75003
- Status
- Analyzed
- Assigner (CNA)
- mitre
- Published
- Aug 17, 2026
- Last modified
- 2026-09-10 19:18 UTC
- Weaknesses
- CWE-669 · Incorrect Resource Transfer Between Spheres
Affected Products
As published by the CNA in the CVE record.
RoundcubeWebmail2 version ranges
- 1.6.0 before 1.6.18
- 1.7.0 before 1.7.3
References
- github.com https://github.com/roundcube/roundcubemail/commit/1cebea03474305d9f75a9a33d30880d290b5591b
- github.com https://github.com/roundcube/roundcubemail/commit/440277c32e6d84f3d116153af1cc8454361a8a56
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
- roundcube.net https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3