Medium
Security advisory
firefly-iii is vulnerable to URL Redirection to Untrusted Site
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-3851
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:51 UTC · Revision 1
Source evidence
firefly-iii is vulnerable to URL Redirection to Untrusted Site
osv:CVE-2021-3851
Complete source record
{
"id": "6481963f806ec9db1e05bd6075ca67308466cbf6d9351580b028a921ac2d9ec5",
"url": "https://osv.dev/vulnerability/CVE-2021-3851",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-3851",
"summary": "firefly-iii is vulnerable to URL Redirection to Untrusted Site",
"evidence": "osv:CVE-2021-3851",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-3851",
"aliases": [
"CVE-2021-3851",
"GHSA-5fvx-5p2r-4mvp"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/firefly-iii/firefly-iii",
"type": "GIT",
"events": [
{
"introduced": "0"
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{
"fixed": "df8b7158a7962c82f18be8b0b2f031a202897353"
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{
"fixed": "8662dfa4c0f71efef61c31dc015c6f723db8318d"
}
],
"database_specific": {
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"cpe": "cpe:2.3:a:firefly-iii:firefly_iii:*:*:*:*:*:*:*:*",
"range": [
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"introduced": "0"
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{
"fixed": "5.6.2"
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"source": "CPE_RANGE"
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{
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"source": "REFERENCES_COMMIT"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3851.json"
}
}
],
"modified": "2026-10-20T10:54:51.582762832Z",
"provider": "osv",
"references": [
"https://github.com/firefly-iii/firefly-iii/commit/8662dfa4c0f71efef61c31dc015c6f723db8318d",
"https://huntr.dev/bounties/549a1040-9b5e-420b-9b80-20700dd9d592"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-3851",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 386294,
"published_at": "2021-10-19T13:15:11.62+00:00"
}