CVE-2026-35543
Publication date 6 April 2026
Last updated 6 April 2026
Ubuntu priority
Description
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| roundcube | 25.10 questing |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.3 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-35543
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
- https://nullcathedral.com/posts/2026-03-18-roundcube-round-two-three-more-sanitizer-bypasses/#smil-animations-values-and-by
- https://github.com/roundcube/roundcubemail/commit/1a63e01542bff42aaa71c00c4c279a09ef31f20c
- https://github.com/roundcube/roundcubemail/commit/39471343ee081ce1d31696c456a2c163462daae3
- https://github.com/roundcube/roundcubemail/commit/82ab5eca7b332fce7a174b2b987f0957a66377cd
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.14
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
- https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5