Medium
Modoboa before 2.8.0 IDOR via API v2 armessages Auto-Reply Creation
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-113599
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 04:00 UTC · Revision 1
Source evidence
Modoboa before 2.8.0 IDOR via API v2 armessages Auto-Reply Creation
core-osv · Original sourcePublished 20 Oct 2026, 15:40 UTC
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.
osv:CVE-2026-113599
Complete source record
{
"id": "b5f674082185f0ab17d593ded9982e0e48aca5449ae2486bfacc481a657bc4fe",
"url": "https://osv.dev/vulnerability/CVE-2026-113599",
"method": "structured",
"payload": {
"kind": "advisory",
"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/armessages/ to inject attacker-controlled auto-reply subject and content into victims' settings or break their auto-reply management via MultipleObjectsReturned errors.",
"evidence": "osv:CVE-2026-113599",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-113599",
"aliases": [
"CVE-2026-113599"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/modoboa/modoboa",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "0fea90b58c4ed94a28cb549ef3c7898af89d51aa"
},
{
"fixed": "e0a4e3b9ee8ad84dba46e4c0f04cbbe7cf78c38d"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.8.0"
}
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"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "e0a4e3b9ee8ad84dba46e4c0f04cbbe7cf78c38d"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "0fea90b58c4ed94a28cb549ef3c7898af89d51aa"
}
],
"source": "REFERENCES_TAG",
"original_tag": "2.8.0"
}
]
}
}
],
"versions": [
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"2.0.0-beta.1",
"1.17.0",
"1.16.1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113599.json"
}
}
],
"modified": "2026-10-28T02:30:33.028368234Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113599.json",
"https://github.com/modoboa/modoboa/releases/tag/2.8.0",
"https://nvd.nist.gov/vuln/detail/CVE-2026-113599",
"https://www.vulncheck.com/advisories/modoboa-before-2.8.0-idor-via-api-v2-armessages-auto-reply-creation",
"https://github.com/modoboa/modoboa/issues/3945",
"https://github.com/modoboa/modoboa/commit/e0a4e3b9ee8ad84dba46e4c0f04cbbe7cf78c38d",
"https://github.com/modoboa/modoboa",
"https://github.com/modoboa/modoboa/blob/2.7.2/modoboa/autoreply/api/v2/serializers.py"
],
"provider_metadata": {
"cwe_ids": [
"CWE-639"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113599.json"
}
},
"related_cves": [
{
"value": "CVE-2026-113599",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500202,
"published_at": "2026-10-20T15:40:27.636+00:00"
}