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No exploitation reportedFix available

CVE-2026-114732

roundcubemail: roundcubemail: Unauthorized account access via alias login in multi-host environments

No exploitation reported by the sources we read.

  • Published2026-10-22
  • Fixed in1.7.5 · 1.6.20
  • WeaknessCWE-288

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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”.

Timeline

dates in UTC
  1. 2026-10-2203:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 03:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-114732?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-114732?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Roundcube webmail
BranchAffectedFixed in
1.7≥ 1.7.0, < 1.7.51.7.5
1.6≥ 1.6.0, < 1.6.201.6.20

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-22

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • roundcubeUbuntu:Pro:26.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:Pro:24.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:Pro:22.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • roundcubeUbuntu:26.10all versions · no fixed version listed
  • roundcubeDebian:14all versions · fixed in 1.6.20+dfsg-1

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-114732 Red Hat Product Security

    roundcubemail: roundcubemail: Unauthorized account access via alias login in multi-host environments

Full record on NVD

Fix

  1. Update Roundcube webmail to 1.7.5 · 1.6.20

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2026-10-22
Last Modified
2026-11-04
NVD status
Analyzed
GitHub Advisory
GHSA-qc6m-xxcv-cwh2

Frequently asked questions

What is CVE-2026-114732?

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”.

Is CVE-2026-114732 actively exploited?

Active exploitation of CVE-2026-114732 has not been confirmed. Its EPSS score was 0.4% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-114732?

CVE-2026-114732 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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