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CVE-2026-35542

MEDIUM

5.3

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 a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/3/2026

Last Modified4/3/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-669

References

https://github.com/roundcube/roundcubemail/commit/e052328e3dc75f13adc2e314eaa4096ac21084ad(cve@mitre.org)

https://github.com/roundcube/roundcubemail/commit/fd0e98178db5c73eaa93d005b561874923f9b0f0(cve@mitre.org)

https://github.com/roundcube/roundcubemail/commit/fde14d01adc9f37893cd82b635883e516ed453f8(cve@mitre.org)

https://github.com/roundcube/roundcubemail/releases/tag/1.5.14(cve@mitre.org)

https://github.com/roundcube/roundcubemail/releases/tag/1.6.14(cve@mitre.org)

https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5(cve@mitre.org)

https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14(cve@mitre.org)

IOC Correlations

No correlations recorded

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