UnratedFix available
Fix CVE(s): CVE-2020-11080, CVE-2023-35945, CVE-2023-44487
Type: advisorySources: OSV
* SECURITY UPDATE: denial of service via HTTP/2 stream reset flood (Rapid Reset) - debian/patches/CVE-2023-44487.patch: rate-limit incoming RST_STREAM on server sessions with a token bucket (burst 1000, 33 tokens per second) and send GOAWAY once it is exhausted, adding the nghttp2_ratelim and nghttp2_time modules and the clock_gettime / GetTickCount64 probes they need. Backported without upstream's new public option setter, so debian/libnghttp2-14.symbols is unchanged. - CVE-2023-44487
- Products
- libnghttp2-14, libnghttp2-dev, libnghttp2-doc, nghttp2, nghttp2-client, nghttp2-proxy, nghttp2-server
- Affected versions
- Not specified
- Fixed versions
- 1.30.0-1ubuntu1+tuxcare.els3
- CVEs
- CVE-2020-11080, CVE-2023-35945, CVE-2023-44487
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:42 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2020-11080, CVE-2023-35945, CVE-2023-44487
core-osv · Original sourcePublished 31 Aug 2026, 11:17 UTC
* SECURITY UPDATE: denial of service via HTTP/2 stream reset flood (Rapid Reset) - debian/patches/CVE-2023-44487.patch: rate-limit incoming RST_STREAM on server sessions with a token bucket (burst 1000, 33 tokens per second) and send GOAWAY once it is exhausted, adding the nghttp2_ratelim and nghttp2_time modules and the clock_gettime / GetTickCount64 probes they need. Backported without upstream's new public option setter, so debian/libnghttp2-14.symbols is unchanged. - CVE-2023-44487
osv:CLSA-2026-1788175030
libnghttp2-14
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
libnghttp2-dev
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
libnghttp2-doc
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
nghttp2
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
nghttp2-client
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
nghttp2-proxy
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
nghttp2-server
Fixed versions: 1.30.0-1ubuntu1+tuxcare.els3
Complete source record
{
"id": "4212bd178ad72c90c3bdc65d6c63ba0fcc4662cef5f813277d4771792426412f",
"url": "https://osv.dev/vulnerability/CLSA-2026-1788175030",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2020-11080, CVE-2023-35945, CVE-2023-44487",
"summary": "* SECURITY UPDATE: denial of service via HTTP/2 stream reset flood (Rapid Reset) - debian/patches/CVE-2023-44487.patch: rate-limit incoming RST_STREAM on server sessions with a token bucket (burst 1000, 33 tokens per second) and send GOAWAY once it is exhausted, adding the nghttp2_ratelim and nghttp2_time modules and the clock_gettime / GetTickCount64 probes they need. Backported without upstream's new public option setter, so debian/libnghttp2-14.symbols is unchanged. - CVE-2023-44487",
"evidence": "osv:CLSA-2026-1788175030",
"products": [
{
"name": {
"value": "libnghttp2-14",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libnghttp2-dev",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libnghttp2-doc",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nghttp2",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nghttp2-client",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nghttp2-proxy",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nghttp2-server",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.30.0-1ubuntu1+tuxcare.els3",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1788175030",
"aliases": [
"CLSA-2026-1788175030"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "libnghttp2-14",
"purl": "pkg:deb/tuxcare/libnghttp2-14?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "libnghttp2-dev",
"purl": "pkg:deb/tuxcare/libnghttp2-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "libnghttp2-doc",
"purl": "pkg:deb/tuxcare/libnghttp2-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "nghttp2",
"purl": "pkg:deb/tuxcare/nghttp2?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "nghttp2-client",
"purl": "pkg:deb/tuxcare/nghttp2-client?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "nghttp2-proxy",
"purl": "pkg:deb/tuxcare/nghttp2-proxy?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+tuxcare.els3"
}
]
}
],
"package": {
"name": "nghttp2-server",
"purl": "pkg:deb/tuxcare/nghttp2-server?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788175030.json"
}
}
],
"modified": "2026-10-26T09:32:04.177639018Z",
"provider": "osv",
"upstream": [
"CVE-2020-11080",
"CVE-2023-35945",
"CVE-2023-44487"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1788175030.html",
"https://nvd.nist.gov/vuln/detail/CVE-2020-11080",
"https://nvd.nist.gov/vuln/detail/CVE-2023-35945",
"https://nvd.nist.gov/vuln/detail/CVE-2023-44487"
]
},
"related_cves": [
{
"value": "CVE-2020-11080",
"evidence": "/upstream"
},
{
"value": "CVE-2023-35945",
"evidence": "/upstream"
},
{
"value": "CVE-2023-44487",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449575,
"published_at": "2026-08-31T11:17:24+00:00"
}