CVE-2026-114474

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Source

https://cve.org/CVERecord?id=CVE-2026-114474

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114474.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-114474

Published

2026-10-21T15:12:15Z

Modified

2026-10-22T02:48:06Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

Use of Less Trusted Source in hMailServer

Details

Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the server with an envelope sender at that domain, so that it passes the domain's SPF and DMARC at other receivers. A message the server downloads from an external POP3 or IMAP account has no SMTP envelope of its own, and the server took the address in its From header as its envelope sender, whatever that address was. A forward or redirect of the downloaded message to an outside address then left with that address as its envelope sender, which the Sender Rewriting Scheme leaves alone for a hosted domain, so that the receiver's SPF check passed for the forged domain, aligned even under strict alignment, with no non-default setting, host name record or DMARC policy needed. An attacker needs to know a mailbox elsewhere that an account here collects and forwards to an outside address; an account holder who adds an external account of their own can collect from a server of their own, which matters where SmtpAuthenticatedSenderCheck holds signed-in senders to their own addresses.

Database specific

{
    "cna_assigner":  "GitLab",
    "cwe_ids":  [
        "CWE-348"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114474.json"
}

References

Affected packages

Git / gitlab.com/hmailserver/hmailserver

Affected ranges

Type

GIT

Repo

https://gitlab.com/hmailserver/hmailserver

Events

Introduced

e4b7163189ac6ce365bb954cf3e264e2e3105a18

Last Affected

e3c448aa66fc310b74d076884d54fae951296915

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "6.0.0"
                },
                {
                    "last_affected":  "6.3.6"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

Other

build-inputs-1

v6.*

v6.0.0

v6.0.0-B3

v6.0.0-B4

v6.1.0

v6.2.0

v6.2.1

v6.2.10

v6.2.11

v6.2.12

v6.2.13

v6.2.14

v6.2.15

v6.2.16

v6.2.17

v6.2.18

v6.2.19

v6.2.2

v6.2.20

v6.2.21

v6.2.22-pre1

v6.2.22-pre2

v6.2.22-pre3

v6.2.22-pre4

v6.2.22-pre5

v6.2.22-pre6

v6.2.23-alpha1

v6.2.23-alpha2

v6.2.24

v6.2.25

v6.2.26

v6.2.27

v6.2.28

v6.2.3

v6.2.4

v6.2.5

v6.2.6

v6.2.7

v6.2.8

v6.2.9

v6.3.0

v6.3.1

v6.3.2

v6.3.3

v6.3.4

v6.3.5

v6.3.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114474.json"