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vuln-cve/data/2026/39xxx/CVE-2026-39320.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-39320",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-06T19:31:07.266Z",
"datePublished": "2026-04-21T00:07:10.371Z",
"dateUpdated": "2026-04-21T19:36:54.787Z"
},
"containers": {
"cna": {
"title": "Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"lang": "en",
"description": "CWE-400: Uncontrolled Resource Consumption",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-1333",
"lang": "en",
"description": "CWE-1333: Inefficient Regular Expression Complexity",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884"
},
{
"name": "https://github.com/SignalK/signalk-server/pull/2568",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/SignalK/signalk-server/pull/2568"
},
{
"name": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d"
},
{
"name": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0"
}
],
"affected": [
{
"vendor": "SignalK",
"product": "signalk-server",
"versions": [
{
"version": "< 2.25.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-21T00:07:10.371Z"
},
"descriptions": [
{
"lang": "en",
"value": "Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the `context` parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix."
}
],
"source": {
"advisory": "GHSA-7gcj-phff-2884",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-21T19:36:30.279521Z",
"id": "CVE-2026-39320",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-04-21T19:36:54.787Z"
}
}
]
}
}