Medium
znuny — security advisory
An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.
- Products
- znuny
- Affected versions
- 6.5.14-1, 6.5.15-2, 6.5.18-1, 6.5.20-1, 6.5.21-1, 6.5.22-1, 6.5.23-1, 6.5.3-1, 6.5.4-1, 6.5.5-1, 6.5.6-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-43926
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:28 UTC · Revision 1
Source evidence
An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.
osv:UBUNTU-CVE-2025-43926
znuny
Fixed versions: Not specified
znuny
Fixed versions: Not specified
znuny
Fixed versions: Not specified
znuny
Fixed versions: Not specified
Complete source record
{
"id": "539b7516a6569b7fbea4e2cd3734500862d1d8480b5b0b24ee5bd975bc392f33",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-43926",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-43926",
"summary": "An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.",
"evidence": "osv:UBUNTU-CVE-2025-43926",
"products": [
{
"name": {
"value": "znuny",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.5.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.5.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.5.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.5.6-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "znuny",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.5.14-1",
"evidence": "/affected/1/versions"
},
{
"value": "6.5.15-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "znuny",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.5.18-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.5.20-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.5.21-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.5.22-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.5.23-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "znuny",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.5.15-2",
"evidence": "/affected/3/versions"
},
{
"value": "6.5.18-1",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2025-43926",
"aliases": [
"UBUNTU-CVE-2025-43926"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "znuny",
"purl": "pkg:deb/ubuntu/znuny?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"6.5.3-1",
"6.5.4-1",
"6.5.5-1",
"6.5.6-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43926.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "otrs2",
"binary_version": "6.5.6-1"
},
{
"binary_name": "znuny",
"binary_version": "6.5.6-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "znuny",
"purl": "pkg:deb/ubuntu/znuny?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"6.5.14-1",
"6.5.15-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43926.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "otrs2",
"binary_version": "6.5.15-2"
},
{
"binary_name": "znuny",
"binary_version": "6.5.15-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "znuny",
"purl": "pkg:deb/ubuntu/znuny?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"6.5.18-1",
"6.5.20-1",
"6.5.21-1",
"6.5.22-1",
"6.5.23-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43926.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "otrs2",
"binary_version": "6.5.23-1"
},
{
"binary_name": "znuny",
"binary_version": "6.5.23-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "znuny",
"purl": "pkg:deb/ubuntu/znuny?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"6.5.15-2",
"6.5.18-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43926.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "otrs2",
"binary_version": "6.5.18-1"
},
{
"binary_name": "znuny",
"binary_version": "6.5.18-1"
}
]
}
}
],
"modified": "2026-10-17T12:56:51.410837185Z",
"provider": "osv",
"upstream": [
"CVE-2025-43926"
],
"references": [
"https://ubuntu.com/security/CVE-2025-43926",
"https://www.cve.org/CVERecord?id=CVE-2025-43926",
"https://www.znuny.org/en/advisories/zsa-2025-07"
]
},
"related_cves": [
{
"value": "CVE-2025-43926",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356469,
"published_at": "2025-05-08T16:15:00+00:00"
}