Medium
Security advisory
The reconcile method in the AttachmentReconciler class of the Halo system v.2.20.18LTS and before is vulnerable to XSS attacks.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-51857
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 03:58 UTC · Revision 1
Source evidence
The reconcile method in the AttachmentReconciler class of the Halo system v.2.20.18LTS and before is vulnerable to XSS attacks.
osv:CVE-2025-51857
Complete source record
{
"id": "ff35463080faf465807425cf5516ff81ee57596fb99db453a6e959fcdc45df2a",
"url": "https://osv.dev/vulnerability/CVE-2025-51857",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-51857",
"summary": "The reconcile method in the AttachmentReconciler class of the Halo system v.2.20.18LTS and before is vulnerable to XSS attacks.",
"evidence": "osv:CVE-2025-51857",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-51857",
"aliases": [
"CVE-2025-51857"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/halo-dev/halo",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "e2fd9ba60ba3640fb093430025f17fd12452505b"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.20.18LTS"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"v2.20.18",
"v2.20.17",
"v2.20.16",
"v2.20.15",
"v2.20.14",
"v2.20.13",
"v2.20.12",
"v2.20.11",
"v2.20.10",
"v2.20.9",
"v2.20.8",
"v2.20.7",
"v2.20.6",
"v2.20.5",
"v2.20.4",
"v2.20.3",
"v2.20.2",
"v2.20.1",
"v2.20.0",
"v2.20.0-rc.2",
"v2.20.0-rc.1",
"v2.19.0",
"v2.19.0-rc.4",
"v2.19.0-rc.3",
"v2.19.0-rc.2",
"v2.19.0-rc.1",
"v2.18.0",
"v2.18.0-rc.1",
"v2.17.0",
"v2.17.0-rc.1",
"v2.17.0-beta.1",
"v2.17.0-alpha.2",
"v2.17.0-alpha.1",
"v2.16.0",
"v2.16.0-rc.2",
"v2.16.0-rc.1",
"v2.15.0",
"v2.15.0-rc.1",
"v2.14.0",
"v2.14.0-rc.1",
"v2.13.0",
"v2.13.0-rc.1",
"v2.12.3",
"v2.12.0-rc.2",
"v2.12.0",
"v2.12.0-rc.1",
"v2.12.0-beta.2",
"v2.12.0-beta.1",
"v2.12.0-alpha.2",
"v2.12.0-alpha.1",
"v2.11.0",
"v2.11.0-rc.2",
"v2.11.0-rc.1",
"v2.10.0",
"v2.10.0-beta.1",
"v2.10.0-alpha.1",
"v2.9.0",
"v2.9.0-rc.1",
"v2.8.0",
"v2.8.0-rc.2",
"v2.8.0-rc.1",
"v2.7.0",
"v2.7.0-rc.2",
"v2.7.0-rc.1",
"v2.6.0",
"v2.6.0-rc.1",
"v2.5.1",
"v2.5.0",
"v2.5.0-rc.2",
"v2.5.0-rc.1",
"v2.4.0",
"v2.4.0-rc.1",
"v2.3.0",
"v2.3.0-rc.1",
"v2.2.0",
"v2.1.0",
"v2.1.0-rc.1",
"v2.0.0",
"v2.0.0-rc.2",
"v2.0.0-rc.1",
"v2.0.0-beta.2",
"v2.0.0-beta.1",
"v2.0.0-alpha.4",
"v2.0.0-alpha.3",
"v2.0.0-alpha.2",
"v2.0.0-alpha.1",
"v1.5.0-alpha.1",
"v1.4.13",
"v1.4.12",
"v1.4.11",
"v1.4.9",
"v1.4.8",
"v1.4.7",
"v1.4.7-beta.1",
"v1.4.6",
"v1.4.5",
"v1.4.4",
"v1.4.3",
"v1.4.3-beta.3",
"v1.4.3-beta.2",
"v1.4.3-beta.1",
"v1.4.2",
"v1.4.1",
"v1.4.0",
"v1.4.0-beta.3",
"v1.4.0-beta.2",
"v1.4.0-beta.1",
"v1.3.2",
"v1.3.1",
"v1.3.0",
"v1.3.0-beta.4",
"v1.3.0-beta.3",
"v1.3.0-beta.2",
"v1.3.0-beta.1",
"v1.2.0",
"v1.1.1",
"v1.1.0",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0",
"v0.4.1",
"v0.4.0",
"v0.3.0",
"v0.2.1",
"v0.2.0",
"v0.1.1",
"v0.1",
"v0.0.9",
"v0.0.8",
"v0.0.7",
"v0.0.6",
"v0.0.5",
"v0.0.4",
"v0.0.3",
"v0.0.2",
"v0.0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-51857.json"
}
}
],
"modified": "2026-10-28T02:30:26.066945909Z",
"provider": "osv",
"references": [
"https://gist.github.com/this1slwl/d714514635119159607c14faebbbcf20",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/51xxx/CVE-2025-51857.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-51857",
"https://github.com/halo-dev/halo"
],
"provider_metadata": {
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/51xxx/CVE-2025-51857.json"
}
},
"related_cves": [
{
"value": "CVE-2025-51857",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492333,
"published_at": "2025-08-05T00:00:00+00:00"
}