Bug 2558790 - CVE-2026-114730 roundcubemail: roundcubemail: Server-Side Request Forgery via address filter bypass [epel-all]
Summary: CVE-2026-114730 roundcubemail: roundcubemail: Server-Side Request Forgery via...
Keywords:
Status: NEW
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: roundcubemail
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Orphan Owner
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["74eed83e-f0f7-4b6f-a318-7...
Depends On:
Blocks: CVE-2026-114730
TreeView+ depends on / blocked
 
Reported: 2026-10-22 09:19 UTC by Laura Pardo
Modified: 2026-10-22 09:19 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Laura Pardo 2026-10-22 09:19:12 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() omitted the RFC 6052 NAT64 prefix 64:ff9b::/96, the RFC 8215 local-use NAT64 prefix 64:ff9b:1::/48 and the unspecified address ::/128, so URLs such as http://[64:ff9b::7f00:1]/ passed the filter and reached loopback, link-local and cloud metadata addresses. Upstream fixed this in the commit “Fix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96”.
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