Bug 2454725 (CVE-2026-35545)

Summary: CVE-2026-35545 roundcubemail: Roundcube Webmail: Information disclosure and access-control bypass via SVG content in email.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Roundcube Webmail. A remote attacker could bypass the remote image blocking feature by sending a specially crafted e-mail message containing SVG (Scalable Vector Graphics) content. This bypass may lead to information disclosure or an access-control bypass, allowing the attacker to gain unauthorized access to sensitive information or functionalities.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2454785, 2454786    
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Description OSIDB Bzimport 2026-04-03 05:02:12 UTC
An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke.