High
hyperkitty — security advisory
An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.
- Products
- hyperkitty
- Affected versions
- 1.1.4-2, 1.1.4-3, 1.1.4-4, 1.2.2-1, 1.3.0-1.1ubuntu1, 1.3.0-1ubuntu1, 1.3.12-2, 1.3.12-3, 1.3.12-3ubuntu1, 1.3.12-7, 1.3.2-1, 1.3.4-4, 1.3.5-1+really1.3.4-1, 1.3.7-1ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2021-33038
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:35 UTC · Revision 1
Source evidence
An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.
osv:UBUNTU-CVE-2021-33038
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
hyperkitty
Fixed versions: Not specified
Complete source record
{
"id": "c80a12b4810d87a1c497aa9087059cfab032b64cd371bbbb42da38d7740b2421",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-33038",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2021-33038",
"summary": "An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.",
"evidence": "osv:UBUNTU-CVE-2021-33038",
"products": [
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.4-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.4-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.0-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.0-1.1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.4-4",
"evidence": "/affected/2/versions"
},
{
"value": "1.3.5-1+really1.3.4-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.7-1ubuntu2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.12-2",
"evidence": "/affected/4/versions"
},
{
"value": "1.3.12-3",
"evidence": "/affected/4/versions"
},
{
"value": "1.3.12-3ubuntu1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.12-3ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "1.3.12-7",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "hyperkitty",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.12-3ubuntu1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2021-33038",
"aliases": [
"UBUNTU-CVE-2021-33038"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.1.4-2",
"1.1.4-3",
"1.1.4-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-django-hyperkitty",
"binary_version": "1.1.4-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.2.2-1",
"1.3.0-1ubuntu1",
"1.3.0-1.1ubuntu1",
"1.3.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-django-hyperkitty",
"binary_version": "1.3.2-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.3.4-4",
"1.3.5-1+really1.3.4-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-django-hyperkitty",
"binary_version": "1.3.5-1+really1.3.4-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.3.7-1ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-django-hyperkitty",
"binary_version": "1.3.7-1ubuntu2"
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]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
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}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1.3.12-2",
"1.3.12-3",
"1.3.12-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-django-hyperkitty",
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},
{
"ranges": [
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"type": "ECOSYSTEM",
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"package": {
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"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.3.12-3ubuntu1",
"1.3.12-7"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-django-hyperkitty",
"binary_version": "1.3.12-7"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hyperkitty",
"purl": "pkg:deb/ubuntu/hyperkitty?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.3.12-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33038.json"
},
"ecosystem_specific": {
"binaries": [
{
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}
]
}
}
],
"modified": "2026-10-17T12:55:47.117944706Z",
"provider": "osv",
"upstream": [
"CVE-2021-33038"
],
"references": [
"https://ubuntu.com/security/CVE-2021-33038",
"https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa",
"https://gitlab.com/mailman/hyperkitty/-/issues/380",
"https://www.cve.org/CVERecord?id=CVE-2021-33038"
]
},
"related_cves": [
{
"value": "CVE-2021-33038",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354078,
"published_at": "2021-05-26T14:15:00+00:00"
}