{"id":"CVE-2026-113599","title":"Modoboa before 2.8.0 IDOR via API v2 armessages Auto-Reply Creation","summary":"Modoboa before 2.8.0 contains an insecure direct object reference vulnerability that allows authenticated users to create auto-reply messages for arbitrary mailboxes by supplying another user's mbox value. Attackers can POST to /api/v2/a…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","cvssSource":"cna","cwe":["CWE-639"],"vendor":"modoboa","product":"modoboa","affected":["modoboa < 2.8.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-20T16:19:12.124795Z"},"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T16:19:21.574Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113599","references":[{"url":"https://github.com/modoboa/modoboa/issues/3945"},{"url":"https://github.com/modoboa/modoboa/commit/e0a4e3b9ee8ad84dba46e4c0f04cbbe7cf78c38d"},{"url":"https://github.com/modoboa/modoboa/releases/tag/2.8.0","label":"modoboa 2.8.0 Release Notes"},{"url":"https://github.com/modoboa/modoboa/blob/2.7.2/modoboa/autoreply/api/v2/serializers.py"},{"url":"https://www.vulncheck.com/advisories/modoboa-before-2.8.0-idor-via-api-v2-armessages-auto-reply-creation","label":"VulnCheck Advisory: Modoboa before 2.8.0 IDOR via API v2 armessages Auto-Reply Creation"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.304Z","slug":"CVE-2026-113599","body":"## Overview\n\nModoboa before 2.8.0 contains an insecure direct object reference vulnerability that allows authenticated users to create auto-reply messages for arbitrary mailboxes by supplying another user's mbox value. Attackers can POST to /api/v2/armessages/ to inject attacker-controlled auto-reply subject and content into victims' settings or break their auto-reply management via MultipleObjectsReturned errors.\n\n## Affected\n\n- `modoboa < 2.8.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}