MailWatch for MailScanner is a web-based front-end to MailScanner. Prior to 1.2.27, any authenticated MailWatch user, including the U/user, D/domain-admin, and H/host roles, can release to inbox or permanently delete the quarantined mail of any other user or domain by supplying an arbitrary message `id` to `mailscanner/quarantine_action.php`. The action path calls `quarantine_list_items()` in `mailscanner/functions.php`, which selects from `maillog` by the supplied identifier without the per-role `global_filter` applied by listing and read views. The action requires a valid session and CSRF token, but the caller can submit a token from the caller's own session; ownership of the requested message is never checked. Message identifiers are enumerable, allowing a low-privilege user to invoke `quarantine_release()` or `quarantine_delete()` for other users' or domains' quarantined messages, force-delivering mail held by the quarantine or permanently deleting it. This issue is fixed in version 1.2.27.
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 29 Oct 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Mailwatch
Mailwatch mailwatch
Vendors & Products Mailwatch
Mailwatch mailwatch

Wed, 28 Oct 2026 22:45:00 +0000

Type Values Removed Values Added
Description MailWatch for MailScanner is a web-based front-end to MailScanner. Prior to 1.2.27, any authenticated MailWatch user, including the U/user, D/domain-admin, and H/host roles, can release to inbox or permanently delete the quarantined mail of any other user or domain by supplying an arbitrary message `id` to `mailscanner/quarantine_action.php`. The action path calls `quarantine_list_items()` in `mailscanner/functions.php`, which selects from `maillog` by the supplied identifier without the per-role `global_filter` applied by listing and read views. The action requires a valid session and CSRF token, but the caller can submit a token from the caller's own session; ownership of the requested message is never checked. Message identifiers are enumerable, allowing a low-privilege user to invoke `quarantine_release()` or `quarantine_delete()` for other users' or domains' quarantined messages, force-delivering mail held by the quarantine or permanently deleting it. This issue is fixed in version 1.2.27.
Title MailWatch: IDOR lets any authenticated user release or delete another tenant's quarantined mail
Weaknesses CWE-566
CWE-639
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-28T22:37:38.513Z

Reserved: 2026-09-04T14:50:16.720Z

Link: CVE-2026-85749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-28T23:17:11.100

Modified: 2026-10-28T23:17:11.100

Link: CVE-2026-85749

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T23:45:14Z

Weaknesses