CVE-2026-35543
unknown
CVSS v3
—
CVSS v2
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VIR risk
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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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-35543
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1.6.5+dfsg-1+deb12u8 |
| debian | bullseye | fixed | 1.4.15+dfsg.1-1+deb11u8 |
| debian | sid | fixed | 1.6.14+dfsg-1 |
| debian | trixie | fixed | 1.6.15+dfsg-0+deb13u1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | roundcube/roundcubemail | >=1.7-beta,<1.7-rc5 | 1.7-rc5 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-35543
- 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
- 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
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
- https://security-tracker.debian.org/tracker/CVE-2026-35543
Verify integrity in audit chain (admin only). AS-IS.