CVE-2026-114730 Roundcube Webmail - Server Side Request Forgery

Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 contains a server-side request forgery filter bypass caused by incomplete network blocklist in rcube_utils::is_local_url(), letting attackers access internal network resources, exploit requires crafted URL with NAT64 prefix.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Server Side Request Forgery
Impact
Server Side Request Forgery, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-918

Vendor fix

Upgrade to versions 1.6.20, 1.7.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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