CVE-2026-114732

MEDIUM

6.8

CVSS v3

Description

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identity records without qualifying the lookup by IMAP host, so a login could be resolved to a user account belonging to a different IMAP host. Upstream fixed this in the commit “Fix bug where an alias login wasn’t qualified by IMAP host”.

CWE-288

How to fix

Remediation Available

roundcubeDebian

Fixed in:1.6.20+dfsg-0+deb13u1CVE-2026-114732

Fixed in:1.6.20+dfsg-1CVE-2026-114732

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.36%probability of exploitation in 30 days

28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Other references6

Related Vulnerabilities

Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2024-1709	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2024-27198	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-4427	Medium	5.3	100%	KEV	Fix
CVE-2025-2747	Critical	9.8	97%	KEV	-
CVE-2023-46747	Critical	9.8	97%	KEV + Ransom	-

Common questions

How do I fix CVE-2026-114732?

Upgrade roundcube on debian 13 to 1.6.20+dfsg-0+deb13u1 or later.

Is CVE-2026-114732 being actively exploited?

Not that we know of. CVE-2026-114732 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.36% is the estimated probability that it will be exploited in the next 30 days. That is higher than 28% of all scored CVEs.

How severe is CVE-2026-114732?

CVE-2026-114732 has a CVSS v3 base score of 6.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-114732 affect?

Published advisories record a fix for roundcube (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-114732

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-22.