CVE-2026-113599

Description

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/armessages/ to inject attacker-controlled auto-reply subject and content into victims' settings or break their auto-reply management via MultipleObjectsReturned errors.

References

• https://github.com/modoboa/modoboa/blob/2.7.2/modoboa/autoreply/api/v2/serializers.py
• https://github.com/modoboa/modoboa/commit/e0a4e3b9ee8ad84dba46e4c0f04cbbe7cf78c38d
• https://github.com/modoboa/modoboa/issues/3945
• https://github.com/modoboa/modoboa/releases/tag/2.8.0
• https://www.vulncheck.com/advisories/modoboa-before-2.8.0-idor-via-api-v2-armessages-auto-reply-creation