usn-8233-1
Vulnerability from osv_ubuntu
Published
2026-05-05 17:07
Modified
2026-06-30 15:55
Summary
nghttp2 vulnerability
Details
Andrew MacPherson discovered that nghttp2 did not properly validate internal state when the session termination API was called. A remote attacker could possibly use this issue to cause nghttp2 to crash, resulting in a denial of service.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.7.1-1ubuntu0.1~esm3"
},
{
"binary_name": "nghttp2",
"binary_version": "1.7.1-1ubuntu0.1~esm3"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.7.1-1ubuntu0.1~esm3"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.7.1-1ubuntu0.1~esm3"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.7.1-1ubuntu0.1~esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.7.1-1ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.1-1ubuntu0.1~esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.7-1",
"1.3.4-2",
"1.4.0-1",
"1.4.0-2",
"1.5.0-2",
"1.6.0-1",
"1.7.0-1",
"1.7.1-1",
"1.7.1-1ubuntu0.1~esm1",
"1.7.1-1ubuntu0.1~esm2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.30.0-1ubuntu1+esm3"
},
{
"binary_name": "nghttp2",
"binary_version": "1.30.0-1ubuntu1+esm3"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.30.0-1ubuntu1+esm3"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.30.0-1ubuntu1+esm3"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.30.0-1ubuntu1+esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.30.0-1ubuntu1+esm3?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.0-1ubuntu1+esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.25.0-1",
"1.27.0-1",
"1.28.0-1",
"1.29.0-1",
"1.29.0-1build1",
"1.30.0-1",
"1.30.0-1ubuntu1",
"1.30.0-1ubuntu1+esm1",
"1.30.0-1ubuntu1+esm2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.40.0-1ubuntu0.3+esm1"
},
{
"binary_name": "nghttp2",
"binary_version": "1.40.0-1ubuntu0.3+esm1"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.40.0-1ubuntu0.3+esm1"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.40.0-1ubuntu0.3+esm1"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.40.0-1ubuntu0.3+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.40.0-1ubuntu0.3+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.40.0-1ubuntu0.3+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.39.2-1",
"1.40.0-1",
"1.40.0-1build1",
"1.40.0-1ubuntu0.1",
"1.40.0-1ubuntu0.2",
"1.40.0-1ubuntu0.3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.43.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2",
"binary_version": "1.43.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.43.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.43.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.43.0-1ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.43.0-1ubuntu0.3?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.43.0-1ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.43.0-1",
"1.43.0-1build1",
"1.43.0-1build2",
"1.43.0-1build3",
"1.43.0-1ubuntu0.1",
"1.43.0-1ubuntu0.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.59.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2",
"binary_version": "1.59.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.59.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.59.0-1ubuntu0.3"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.59.0-1ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.59.0-1ubuntu0.3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.59.0-1ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.55.1-1",
"1.57.0-1",
"1.58.0-1",
"1.59.0-1",
"1.59.0-1build1",
"1.59.0-1build2",
"1.59.0-1build4",
"1.59.0-1ubuntu0.1",
"1.59.0-1ubuntu0.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-27135",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnghttp2-14",
"binary_version": "1.64.0-1.1ubuntu1.1"
},
{
"binary_name": "nghttp2",
"binary_version": "1.64.0-1.1ubuntu1.1"
},
{
"binary_name": "nghttp2-client",
"binary_version": "1.64.0-1.1ubuntu1.1"
},
{
"binary_name": "nghttp2-proxy",
"binary_version": "1.64.0-1.1ubuntu1.1"
},
{
"binary_name": "nghttp2-server",
"binary_version": "1.64.0-1.1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "nghttp2",
"purl": "pkg:deb/ubuntu/nghttp2@1.64.0-1.1ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.64.0-1.1ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.64.0-1ubuntu1",
"1.64.0-1.1",
"1.64.0-1.1build1",
"1.64.0-1.1ubuntu1"
]
}
],
"aliases": [],
"details": "Andrew MacPherson discovered that nghttp2 did not properly validate\ninternal state when the session termination API was called. A remote\nattacker could possibly use this issue to cause nghttp2 to crash, resulting\nin a denial of service.",
"id": "USN-8233-1",
"modified": "2026-06-30T15:55:18Z",
"published": "2026-05-05T17:07:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8233-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-27135"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "nghttp2 vulnerability",
"upstream": [
"UBUNTU-CVE-2026-27135"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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