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2 vulnerabilities by komari-monitor
CVE-2025-55300 (GCVE-0-2025-55300)
Vulnerability from nvd – Published: 2025-08-18 17:41 – Updated: 2025-08-18 17:52
VLAI
EPSS
VEX
Title
Komari Allows Cross-site WebSocket Hijacking
Summary
Komari is a lightweight, self-hosted server monitoring tool designed to provide a simple and efficient solution for monitoring server performance. Prior to 1.0.4-fix1, WebSocket upgrader has disabled origin checking, enabling Cross-Site WebSocket Hijacking (CSWSH) attacks against authenticated users. Any third party website can send requests to the terminal websocket endpoint with browser's cookies, resulting in remote code execution. This vulnerability is fixed in 1.0.4-fix1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/komari-monitor/komari/security… | x_refsource_CONFIRM |
| https://github.com/komari-monitor/komari/commit/d… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| komari-monitor | komari |
Affected:
< 1.0.4-fix1
|
{
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"id": "CVE-2025-55300",
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],
"role": "CISA Coordinator",
"timestamp": "2025-08-18T17:51:59.661046Z",
"version": "2.0.3"
},
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}
}
],
"providerMetadata": {
"dateUpdated": "2025-08-18T17:52:19.481Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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{
"product": "komari",
"vendor": "komari-monitor",
"versions": [
{
"status": "affected",
"version": "\u003c 1.0.4-fix1"
}
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}
],
"descriptions": [
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}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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"vulnAvailabilityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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"type": "CWE"
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],
"providerMetadata": {
"dateUpdated": "2025-08-18T17:41:37.372Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
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"tags": [
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],
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},
{
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/komari-monitor/komari/commit/d31d12e59febce100ab0285b93338f09aa5d6cb1"
}
],
"source": {
"advisory": "GHSA-q355-h244-969h",
"discovery": "UNKNOWN"
},
"title": "Komari Allows Cross-site WebSocket Hijacking"
}
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"datePublished": "2025-08-18T17:41:37.372Z",
"dateReserved": "2025-08-12T16:15:30.238Z",
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"state": "PUBLISHED"
},
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CVE-2025-55300 (GCVE-0-2025-55300)
Vulnerability from cvelistv5 – Published: 2025-08-18 17:41 – Updated: 2025-08-18 17:52
VLAI
EPSS
VEX
Title
Komari Allows Cross-site WebSocket Hijacking
Summary
Komari is a lightweight, self-hosted server monitoring tool designed to provide a simple and efficient solution for monitoring server performance. Prior to 1.0.4-fix1, WebSocket upgrader has disabled origin checking, enabling Cross-Site WebSocket Hijacking (CSWSH) attacks against authenticated users. Any third party website can send requests to the terminal websocket endpoint with browser's cookies, resulting in remote code execution. This vulnerability is fixed in 1.0.4-fix1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/komari-monitor/komari/security… | x_refsource_CONFIRM |
| https://github.com/komari-monitor/komari/commit/d… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| komari-monitor | komari |
Affected:
< 1.0.4-fix1
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-55300",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-08-18T17:51:59.661046Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-08-18T17:52:19.481Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "komari",
"vendor": "komari-monitor",
"versions": [
{
"status": "affected",
"version": "\u003c 1.0.4-fix1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Komari is a lightweight, self-hosted server monitoring tool designed to provide a simple and efficient solution for monitoring server performance. Prior to 1.0.4-fix1, WebSocket upgrader has disabled origin checking, enabling Cross-Site WebSocket Hijacking (CSWSH) attacks against authenticated users. Any third party website can send requests to the terminal websocket endpoint with browser\u0027s cookies, resulting in remote code execution. This vulnerability is fixed in 1.0.4-fix1."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-08-18T17:41:37.372Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/komari-monitor/komari/security/advisories/GHSA-q355-h244-969h",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/komari-monitor/komari/security/advisories/GHSA-q355-h244-969h"
},
{
"name": "https://github.com/komari-monitor/komari/commit/d31d12e59febce100ab0285b93338f09aa5d6cb1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/komari-monitor/komari/commit/d31d12e59febce100ab0285b93338f09aa5d6cb1"
}
],
"source": {
"advisory": "GHSA-q355-h244-969h",
"discovery": "UNKNOWN"
},
"title": "Komari Allows Cross-site WebSocket Hijacking"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2025-55300",
"datePublished": "2025-08-18T17:41:37.372Z",
"dateReserved": "2025-08-12T16:15:30.238Z",
"dateUpdated": "2025-08-18T17:52:19.481Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}