Medium
Security advisory
A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to 2.2.11.Final.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-3629
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:14 UTC · Revision 1
Source evidence
A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to 2.2.11.Final.
osv:CVE-2021-3629
Complete source record
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"method": "structured",
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"title": "CVE-2021-3629",
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],
"modified": "2026-10-24T10:30:15.719272409Z",
"provider": "osv",
"references": [
"https://security.netapp.com/advisory/ntap-20220729-0008/",
"https://bugzilla.redhat.com/show_bug.cgi?id=1977362"
],
"provider_metadata": {
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},
"related_cves": [
{
"value": "CVE-2021-3629",
"evidence": "/id"
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 429209,
"published_at": "2022-05-24T19:15:09.093+00:00"
}