cve-2026-73890
HIGH CVSS 7.5 opencve
Description
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Timeline
- Published
- 2026-08-18 21:18 UTC
- Last Modified
- 2026-08-28
CVSS Details
CVSS details not available.
Affected Products
No product information available.
CVSS metrics
| Version | Base | Severity | Vector | Exploitability | Impact | Source |
|---|---|---|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
mitre | ||
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
nvd | ||
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
opencve |
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"cve": "CVE-2026-73890",
"enrichment": {
"affected": [
{
"configurations": [
{
"platform": null,
"status": "affected",
"versions": {
"scheme": "semver",
"value": "4.5.0"
}
}
],
"enrichment": {
"confidence": 95.0,
"confidence_source": "inferred",
"scores": [
{
"score": 95.0,
"source": "inferred"
},
{
"score": 100.0,
"source": "matching"
}
]
},
"original": {
"product": "Helidon",
"source": "cna",
"vendor": "Oracle Corporation"
},
"product": "helidon",
"vendor": "oracle"
}
],
"created": "2026-08-19T06:15:03.028045+00:00",
"title": "Denial of Service via Crafted HTTP/2 Requests in Oracle Helidon",
"updated": "2026-08-29T00:15:06.283089+00:00",
"vendors": [
"oracle",
"oracle$PRODUCT$helidon"
]
},
"epss": {
"score": 0.00435
},
"mitre": {
"cpes": [
"cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:*"
],
"created": "2026-08-18T21:04:00.331000+00:00",
"description": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"metrics": {
"cvssV2_0": {},
"cvssV3_0": {},
"cvssV3_1": {
"score": 7.5,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
"cvssV4_0": {}
},
"mitre_repo_path": "cves/2026/73xxx/CVE-2026-73890.json",
"references": [
"https://www.oracle.com/security-alerts/cspuaug2026.html"
],
"title": null,
"updated": "2026-08-28T17:22:17.439000+00:00",
"vendors": [
"oracle",
"oracle$PRODUCT$helidon"
],
"weaknesses": []
},
"nvd": {
"cpes": [
"cpe:2.3:a:oracle:helidon:4.5.0:*:*:*:*:*:*:*"
],
"created": "2026-08-18T21:18:21.533000+00:00",
"description": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"metrics": {
"cvssV2_0": {},
"cvssV3_0": {},
"cvssV3_1": {
"score": 7.5,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
"cvssV4_0": {}
},
"nvd_repo_path": "2026/CVE-2026-73890.json",
"references": [
"https://www.oracle.com/security-alerts/cspuaug2026.html"
],
"title": null,
"updated": "2026-08-28T20:19:47.757000+00:00",
"vendors": [
"oracle",
"oracle$PRODUCT$helidon"
],
"weaknesses": [
"CWE-284"
]
},
"opencve": {
"changes": [
{
"created": "2026-08-18T21:15:00+00:00",
"data": [
{
"details": {
"new": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"old": null
},
"type": "description"
},
{
"details": [
"oracle",
"oracle$PRODUCT$helidon"
],
"type": "first_time"
},
{
"details": {
"added": [
"cpe:2.3:a:oracle:helidon:4.5.0:*:*:*:*:*:*:*"
],
"removed": []
},
"type": "cpes"
},
{
"details": {
"added": [
"oracle",
"oracle$PRODUCT$helidon"
],
"removed": []
},
"type": "vendors"
},
{
"details": {
"added": [
"https://www.oracle.com/security-alerts/cspuaug2026.html"
],
"removed": []
},
"type": "references"
},
{
"details": {
"added": {
"cvssV3_1": {
"score": 7.5,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
},
"removed": {},
"updated": {}
},
"type": "metrics"
}
],
"id": "0580a1cc-9480-4080-91c0-9e5554fa94eb"
},
{
"created": "2026-08-19T06:30:00+00:00",
"data": [
{
"details": {
"new": "Unauthenticated HTTP/2 Denial of Service in Oracle Helidon 4.5.0",
"old": null
},
"type": "title"
},
{
"details": {
"added": [
"CWE-1017",
"CWE-285"
],
"removed": []
},
"type": "weaknesses"
}
],
"id": "4d0e4838-b776-4763-8f43-d06f12eba58e"
},
{
"created": "2026-08-19T17:30:00+00:00",
"data": [
{
"details": {
"new": null,
"old": "Unauthenticated HTTP/2 Denial of Service in Oracle Helidon 4.5.0"
},
"type": "title"
}
],
"id": "c7262ca9-92aa-4a4f-b8bd-3cf852f28f68"
},
{
"created": "2026-08-20T19:30:00+00:00",
"data": [
{
"details": {
"added": [
"CWE-284"
],
"removed": []
},
"type": "weaknesses"
},
{
"details": {
"added": {
"ssvc": {
"options": {
"Automatable": "yes",
"Exploitation": "none",
"Technical Impact": "partial"
},
"version": "2.0.3"
}
},
"removed": {},
"updated": {}
},
"type": "metrics"
}
],
"id": "27164b25-0ccb-4251-b886-bdbb295475e3"
},
{
"created": "2026-08-21T03:15:00+00:00",
"data": [
{
"details": {
"new": "Unauthenticated HTTP/2 Remote DoS via Helidon Imperative Web Server",
"old": null
},
"type": "title"
},
{
"details": {
"added": [],
"removed": [
"CWE-1017",
"CWE-285"
]
},
"type": "weaknesses"
}
],
"id": "cee31f71-b8d2-43cd-a08c-18e5541e7231"
},
{
"created": "2026-08-21T04:45:00+00:00",
"data": [
{
"details": {
"new": null,
"old": "Unauthenticated HTTP/2 Remote DoS via Helidon Imperative Web Server"
},
"type": "title"
}
],
"id": "2b3f3b0c-9171-4b8d-8b93-4504960bce32"
},
{
"created": "2026-08-28T19:45:00+00:00",
"data": [
{
"details": {
"new": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"old": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)."
},
"type": "description"
},
{
"details": {
"added": [
"cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:*"
],
"removed": []
},
"type": "cpes"
}
],
"id": "6810549b-9723-4166-b70e-4095bdd467da"
},
{
"created": "2026-08-29T00:30:00+00:00",
"data": [
{
"details": {
"new": "Denial of Service via Crafted HTTP/2 Requests in Oracle Helidon",
"old": null
},
"type": "title"
}
],
"id": "62d79dbe-f896-4a32-a042-b26868c4e713"
}
],
"cpes": {
"data": [
"cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:*",
"cpe:2.3:a:oracle:helidon:4.5.0:*:*:*:*:*:*:*"
],
"providers": [
"mitre",
"nvd"
]
},
"created": {
"data": "2026-08-18T21:04:00.331000+00:00",
"provider": "mitre"
},
"description": {
"data": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"provider": "mitre"
},
"metrics": {
"cvssV2_0": {
"data": {},
"provider": null
},
"cvssV3_0": {
"data": {},
"provider": null
},
"cvssV3_1": {
"data": {
"score": 7.5,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
"provider": "mitre"
},
"cvssV4_0": {
"data": {},
"provider": null
},
"epss": {
"data": {
"score": 0.00435
},
"provider": "first"
},
"kev": {
"data": {},
"provider": null
},
"ssvc": {
"data": {
"options": {
"Automatable": "yes",
"Exploitation": "none",
"Technical Impact": "partial"
},
"version": "2.0.3"
},
"provider": "vulnrichment"
},
"threat_severity": {
"data": null,
"provider": null
}
},
"references": {
"data": [
"https://www.oracle.com/security-alerts/cspuaug2026.html"
],
"providers": [
"mitre",
"nvd"
]
},
"title": {
"data": "Denial of Service via Crafted HTTP/2 Requests in Oracle Helidon",
"provider": "enrichment"
},
"updated": {
"data": "2026-08-29T00:15:06.283089+00:00",
"provider": "enrichment"
},
"vendors": {
"data": [
"oracle",
"oracle$PRODUCT$helidon"
],
"providers": [
"mitre",
"nvd",
"enrichment"
]
},
"weaknesses": {
"data": [
"CWE-284"
],
"providers": [
"nvd",
"vulnrichment"
]
}
},
"vulnrichment": {
"cpes": [],
"created": "2026-08-18T21:04:00.331000+00:00",
"description": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"metrics": {
"cvssV2_0": {},
"cvssV3_0": {},
"cvssV3_1": {},
"cvssV4_0": {},
"kev": {},
"ssvc": {
"options": {
"Automatable": "yes",
"Exploitation": "none",
"Technical Impact": "partial"
},
"version": "2.0.3"
}
},
"references": [],
"title": null,
"updated": "2026-08-20T18:11:21.413000+00:00",
"vendors": [],
"vulnrichment_repo_path": "2026/73xxx/CVE-2026-73890.json",
"weaknesses": [
"CWE-284"
]
}
}
Enrichment data
Aggregated bundle (all enrichments)