High
prosody — security advisory
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Products
- prosody
- Affected versions
- 0.10.0-1, 0.10.0-1build1, 0.10.0-1ubuntu0.1~esm1, 0.11.10-1, 0.11.10-1build1, 0.11.10-1build2, 0.11.11-1, 0.11.11-2, 0.11.12-1, 0.11.13-1, 0.11.2-1, 0.11.3-1, 0.11.4-1, 0.12.3-1, 0.12.4-1, 0.12.4-1build1, 0.12.4-1build2, 0.12.4-1build3, 0.12.5-1build1, 0.9.10-1, 0.9.12-2, 0.9.8-1, 0.9.9-1, 13.0.1-1, 13.0.2-1, 13.0.2-1build1, 13.0.3-1, 13.0.4-1, 13.0.4-2, 13.0.5-1, 13.0.6-1, 13.0.6-1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-43506
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:12 UTC · Revision 1
Source evidence
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
osv:UBUNTU-CVE-2026-43506
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
prosody
Fixed versions: Not specified
Complete source record
{
"id": "78184bbf58d16786d8942b629f59146683665db7bd385cb3acbf2f40641b658a",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-43506",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-43506",
"summary": "An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.",
"evidence": "osv:UBUNTU-CVE-2026-43506",
"products": [
{
"name": {
"value": "prosody",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.9.8-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.9-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.10-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.9.12-2",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.0-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.0-1ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.11.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.11.4-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.10-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.10-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.10-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.11-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.11-2",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.12-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.11.13-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.12.3-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.12.4-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.12.4-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "0.12.4-1build2",
"evidence": "/affected/4/versions"
},
{
"value": "0.12.4-1build3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.12.5-1build1",
"evidence": "/affected/5/versions"
},
{
"value": "13.0.1-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "13.0.4-2",
"evidence": "/affected/6/versions"
},
{
"value": "13.0.5-1",
"evidence": "/affected/6/versions"
},
{
"value": "13.0.6-1",
"evidence": "/affected/6/versions"
},
{
"value": "13.0.6-1build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "prosody",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "13.0.1-1",
"evidence": "/affected/7/versions"
},
{
"value": "13.0.2-1",
"evidence": "/affected/7/versions"
},
{
"value": "13.0.2-1build1",
"evidence": "/affected/7/versions"
},
{
"value": "13.0.3-1",
"evidence": "/affected/7/versions"
},
{
"value": "13.0.4-1",
"evidence": "/affected/7/versions"
},
{
"value": "13.0.4-2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-43506",
"aliases": [
"UBUNTU-CVE-2026-43506"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.9.8-1",
"0.9.9-1",
"0.9.10-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "0.9.10-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"0.9.12-2",
"0.10.0-1",
"0.10.0-1build1",
"0.10.0-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "0.10.0-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.11.2-1",
"0.11.3-1",
"0.11.4-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "0.11.4-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.11.10-1",
"0.11.10-1build1",
"0.11.10-1build2",
"0.11.11-1",
"0.11.11-2",
"0.11.12-1",
"0.11.13-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "0.11.13-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.12.3-1",
"0.12.4-1",
"0.12.4-1build1",
"0.12.4-1build2",
"0.12.4-1build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "0.12.4-1build3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"0.12.5-1build1",
"13.0.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "13.0.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"13.0.4-2",
"13.0.5-1",
"13.0.6-1",
"13.0.6-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "13.0.6-1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prosody",
"purl": "pkg:deb/ubuntu/prosody?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"13.0.1-1",
"13.0.2-1",
"13.0.2-1build1",
"13.0.3-1",
"13.0.4-1",
"13.0.4-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43506.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "prosody",
"binary_version": "13.0.4-2"
}
]
}
}
],
"modified": "2026-10-17T12:58:17.470135222Z",
"provider": "osv",
"upstream": [
"CVE-2026-43506"
],
"references": [
"https://ubuntu.com/security/CVE-2026-43506",
"https://www.cve.org/CVERecord?id=CVE-2026-43506",
"https://prosody.im/security/advisory_735dd9d3/",
"https://hg.prosody.im/trunk/rev/836a70deb3c9",
"https://hg.prosody.im/trunk/rev/e27d94d8f505",
"https://hg.prosody.im/trunk/rev/041c7ff18f76",
"https://hg.prosody.im/trunk/rev/374b72785488"
]
},
"related_cves": [
{
"value": "CVE-2026-43506",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358514,
"published_at": "2026-05-01T15:16:00+00:00"
}