CVE-2026-35537
roundcubeVulnerabilityCVSS 3.7Patched
No public exploitation has been reported so far. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 3.7 LOW
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactNone
Integrity impactLow
Availability impactNone
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:12 | roundcube | - | 1.6.5+dfsg-1+deb12u8 | fixed |
| Debian:13 | roundcube | - | 1.6.15+dfsg-0+deb13u1 | fixed |
| Debian:14 | roundcube | - | 1.6.14+dfsg-1 | fixed |
| Ubuntu:Pro:16.04:LTS | roundcube | - | - | affected (no fix yet) |
| Ubuntu:Pro:18.04:LTS | roundcube | - | - | affected (no fix yet) |
| Ubuntu:Pro:20.04:LTS | roundcube | - | - | affected (no fix yet) |
| Ubuntu:Pro:22.04:LTS | roundcube | - | - | affected (no fix yet) |
| Ubuntu:Pro:24.04:LTS | roundcube | - | - | affected (no fix yet) |
| Ubuntu:25.10 | roundcube | - | - | affected (no fix yet) |
| Ubuntu:Pro:26.04:LTS | roundcube | - | - | affected (no fix yet) |
| openSUSE:Leap 16.0 | roundcubemail | - | 1.6.15-bp160.1.1 | fixed |