Low
undici Denial of Service attack via bad certificate data
Type: advisorySources: OSV
Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-47279
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 02:12 UTC · Revision 1
Source evidence
undici Denial of Service attack via bad certificate data
core-osv · Original sourcePublished 15 May 2025, 17:16 UTC
Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.
osv:CVE-2025-47279
Complete source record
{
"id": "365391fb08ab3f1609be90bf3c3341c715c232a61cb6bc77e460647a89ee6d1a",
"url": "https://osv.dev/vulnerability/CVE-2025-47279",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "undici Denial of Service attack via bad certificate data",
"summary": "Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.",
"evidence": "osv:CVE-2025-47279",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2025-47279",
"aliases": [
"CVE-2025-47279",
"GHSA-cxrh-j4jr-qwg3"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
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{
"repo": "https://github.com/nodejs/undici",
"type": "GIT",
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{
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{
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{
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{
"fixed": "f317618ec28753a4218beccea048bcf89c36db25"
}
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
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{
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"source": "REFERENCES_COMMIT"
}
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"database_specific": {
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}
}
],
"modified": "2026-10-28T02:30:52.758442708Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47279.json",
"https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3",
"https://nvd.nist.gov/vuln/detail/CVE-2025-47279",
"https://github.com/nodejs/undici/issues/3895",
"https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25",
"https://github.com/nodejs/undici/pull/4088"
],
"provider_metadata": {
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],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47279.json"
}
},
"related_cves": [
{
"value": "CVE-2025-47279",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521673,
"published_at": "2025-05-15T17:16:02.738+00:00"
}