High
Security advisory
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-9512, CVE-2019-9514
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:37 UTC · Revision 1
Source evidence
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.
osv:CVE-2019-9514
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2019-9514",
"method": "structured",
"payload": {
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"title": "CVE-2019-9514",
"summary": "Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.",
"evidence": "osv:CVE-2019-9514",
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"GHSA-39qc-96h7-956f",
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"GO-2022-0536"
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"modified": "2026-10-24T10:30:55.865094914Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04%40%3Cusers.trafficserver.apache.org%3E",
"https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19%40%3Cannounce.trafficserver.apache.org%3E",
"https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7%40%3Cdev.trafficserver.apache.org%3E",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/",
"https://support.f5.com/csp/article/K01988340?utm_source=f5support&%3Butm_medium=RSS",
"https://access.redhat.com/errata/RHSA-2019:2594",
"https://access.redhat.com/errata/RHSA-2019:2661",
"https://access.redhat.com/errata/RHSA-2019:2682",
"https://access.redhat.com/errata/RHSA-2019:2690",
"https://access.redhat.com/errata/RHSA-2019:2726",
"https://access.redhat.com/errata/RHSA-2019:2766",
"https://access.redhat.com/errata/RHSA-2019:2769",
"https://access.redhat.com/errata/RHSA-2019:2796",
"https://access.redhat.com/errata/RHSA-2019:2861",
"https://access.redhat.com/errata/RHSA-2019:2925",
"https://access.redhat.com/errata/RHSA-2019:2939",
"https://access.redhat.com/errata/RHSA-2019:2955",
"https://access.redhat.com/errata/RHSA-2019:2966",
"https://access.redhat.com/errata/RHSA-2019:3131",
"https://access.redhat.com/errata/RHSA-2019:3245",
"https://access.redhat.com/errata/RHSA-2019:3265",
"https://access.redhat.com/errata/RHSA-2019:3892",
"https://access.redhat.com/errata/RHSA-2019:3906",
"https://access.redhat.com/errata/RHSA-2019:4018",
"https://access.redhat.com/errata/RHSA-2019:4019",
"https://access.redhat.com/errata/RHSA-2019:4020",
"https://access.redhat.com/errata/RHSA-2019:4021",
"https://access.redhat.com/errata/RHSA-2019:4040",
"https://access.redhat.com/errata/RHSA-2019:4041",
"https://access.redhat.com/errata/RHSA-2019:4042",
"https://access.redhat.com/errata/RHSA-2019:4045",
"https://access.redhat.com/errata/RHSA-2019:4269",
"https://access.redhat.com/errata/RHSA-2019:4273",
"https://access.redhat.com/errata/RHSA-2019:4352",
"https://access.redhat.com/errata/RHSA-2020:0406",
"https://access.redhat.com/errata/RHSA-2020:0727",
"https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md",
"https://kb.cert.org/vuls/id/605641/",
"https://kc.mcafee.com/corporate/index?page=content&id=SB10296",
"https://lists.debian.org/debian-lts-announce/2020/12/msg00011.html",
"https://seclists.org/bugtraq/2019/Aug/24",
"https://seclists.org/bugtraq/2019/Aug/31",
"https://seclists.org/bugtraq/2019/Aug/43",
"https://seclists.org/bugtraq/2019/Sep/18",
"https://security.netapp.com/advisory/ntap-20190823-0001/",
"https://security.netapp.com/advisory/ntap-20190823-0004/",
"https://security.netapp.com/advisory/ntap-20190823-0005/",
"https://support.f5.com/csp/article/K01988340",
"https://usn.ubuntu.com/4308-1/",
"https://www.debian.org/security/2019/dsa-4503",
"https://www.debian.org/security/2019/dsa-4508",
"https://www.debian.org/security/2019/dsa-4520",
"https://www.debian.org/security/2020/dsa-4669",
"https://www.synology.com/security/advisory/Synology_SA_19_33"
],
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"last_affected": "4.1"
},
{
"introduced": "4.2"
},
{
"last_affected": "4.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:openshift_service_mesh",
"extracted_events": [
{
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:openstack",
"extracted_events": [
{
"range": [
{
"introduced": "14"
},
{
"last_affected": "14"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:quay:3.0.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:quay",
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"last_affected": "3.0.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:single_sign-on:7.3:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:single_sign-on",
"extracted_events": [
{
"range": [
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:software_collections",
"extracted_events": [
{
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:*"
],
"vendor_product": "synology:diskstation_manager",
"extracted_events": [
{
"range": [
{
"introduced": "6.2"
},
{
"last_affected": "6.2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-9512",
"evidence": "/aliases"
},
{
"value": "CVE-2019-9514",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438519,
"published_at": "2019-08-13T21:15:12.443+00:00"
}