Medium
File Browser is vulnerable to Stored Cross-Site Scripting via text/template branding injection
Type: advisorySources: OSV
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-34530
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 15:08 UTC · Revision 1
Source evidence
File Browser is vulnerable to Stored Cross-Site Scripting via text/template branding injection
core-osv · Original sourcePublished 1 Apr 2026, 20:41 UTC
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.
osv:CVE-2026-34530
Complete source record
{
"id": "0afc3c89a7173f036053b341237812fcbc721ce67a52c2a0925817308fe6bb89",
"url": "https://osv.dev/vulnerability/CVE-2026-34530",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "File Browser is vulnerable to Stored Cross-Site Scripting via text/template branding injection",
"summary": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.",
"evidence": "osv:CVE-2026-34530",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-34530",
"aliases": [
"CVE-2026-34530",
"GHSA-xfqj-3vmx-63wv",
"GO-2026-5754"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/filebrowser/filebrowser",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "860c19ddf58665aafcf976f5299a907738214226"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.62.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "860c19ddf58665aafcf976f5299a907738214226"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v2.62.2"
},
{
"cpe": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.62.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.62.1",
"v2.62.0",
"v2.61.2",
"v2.61.1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34530.json"
}
}
],
"modified": "2026-10-28T02:30:29.839250947Z",
"provider": "osv",
"references": [
"https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34530.json",
"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-xfqj-3vmx-63wv",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34530"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34530.json"
}
},
"related_cves": [
{
"value": "CVE-2026-34530",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 496676,
"published_at": "2026-04-01T20:41:08.718+00:00"
}