CVE-2026-114730CWE-918ssrf

CVE-2026-114730

High · published October 22, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
22.8
In the wild
Unconfirmed
What it is

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”.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00312 · 22.8th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-10-22T07:16Z
References (6)
https://bugs.debian.org/1151279 · [email protected]https://github.com/roundcube/roundcubemail/commit/3c3a65f66b53b7aaf3d720acd06e0b102eceb090 · [email protected]https://github.com/roundcube/roundcubemail/commit/6e1d480e730a45f29829b6a11af608d5d6eb3db6 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 · [email protected]https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 22 OCT 02:09Z
    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
    cvelistv5
  • 22 OCT 02:09Z
    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
    cvelistv5