Low
node-formidable — security advisory
Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.
- Products
- node-formidable
- Affected versions
- 1.0.13-1, 1.2.1+20200129git8231ea6-1, 1.2.1+20200129git8231ea6-2, 1.2.1-3, 3.2.1+20220105git2815e91+~cs4.0.6-4, 3.2.5+20221017git493ec88+~cs4.0.9-1, 3.5.4+~cs11.10.5-1, 3.5.4+~cs11.10.5-2
- Fixed versions
- Not specified
- CVEs
- CVE-2025-46653
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:14 UTC · Revision 1
Source evidence
Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.
osv:UBUNTU-CVE-2025-46653
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
node-formidable
Fixed versions: Not specified
Complete source record
{
"id": "ac1fbfd8dd20f5c193e49ec1d20495a3a4867a23e92a7197715125bde8d8f986",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-46653",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-46653",
"summary": "Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not \"cryptographically secure.\" (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.",
"evidence": "osv:UBUNTU-CVE-2025-46653",
"products": [
{
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},
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"evidence": "/affected/0/versions"
}
]
},
{
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{
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"evidence": "/affected/3/versions"
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{
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"evidence": "/affected/6/versions"
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{
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{
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]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2025-46653",
"aliases": [
"UBUNTU-CVE-2025-46653"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
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"events": [
{
"introduced": "0"
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},
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46653.json"
},
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"package": {
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"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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],
"database_specific": {
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},
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{
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"purl": "pkg:deb/ubuntu/node-formidable?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.2.1-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46653.json"
},
"ecosystem_specific": {
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{
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},
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],
"modified": "2026-10-27T04:15:23.626875310Z",
"provider": "osv",
"upstream": [
"CVE-2025-46653"
],
"references": [
"https://ubuntu.com/security/CVE-2025-46653",
"https://www.cve.org/CVERecord?id=CVE-2025-46653",
"https://github.com/node-formidable/formidable/blob/d0fbec13edc8add54a1afb9ce1a8d3db803f8d47/CHANGELOG.md?plain=1#L10",
"https://github.com/node-formidable/formidable/commit/022c2c5577dfe14d2947f10909d81b03b6070bf5",
"https://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md"
]
},
"related_cves": [
{
"value": "CVE-2025-46653",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460159,
"published_at": "2025-04-26T21:15:00+00:00"
}