FKIE_CVE-2026-3418
Vulnerability from fkie_nvd - Published: 2026-08-06 22:17 - Updated: 2026-08-07 18:17
Severity
Summary
The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges.
Successful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "WSO2 API Manager",
"vendor": "WSO2",
"versions": [
{
"lessThan": "4.4.0.67",
"status": "affected",
"version": "4.4.0",
"versionType": "custom"
},
{
"lessThan": "4.5.0.52",
"status": "affected",
"version": "4.5.0",
"versionType": "custom"
},
{
"lessThan": "4.6.0.16",
"status": "affected",
"version": "4.6.0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WSO2 Traffic Manager",
"vendor": "WSO2",
"versions": [
{
"lessThan": "4.5.0.51",
"status": "affected",
"version": "4.5.0",
"versionType": "custom"
},
{
"lessThan": "4.6.0.16",
"status": "affected",
"version": "4.6.0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WSO2 API Control Plane",
"vendor": "WSO2",
"versions": [
{
"lessThan": "4.5.0.53",
"status": "affected",
"version": "4.5.0",
"versionType": "custom"
},
{
"lessThan": "4.6.0.17",
"status": "affected",
"version": "4.6.0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WSO2 Universal Gateway",
"vendor": "WSO2",
"versions": [
{
"lessThan": "4.5.0.52",
"status": "affected",
"version": "4.5.0",
"versionType": "custom"
},
{
"lessThan": "4.6.0.16",
"status": "affected",
"version": "4.6.0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"packageName": "org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.impl",
"product": "WSO2 Carbon API Management Implementation",
"vendor": "WSO2",
"versions": [
{
"lessThan": "9.30.67.156",
"status": "affected",
"version": "9.30.67",
"versionType": "custom"
},
{
"lessThan": "9.31.86.141",
"status": "affected",
"version": "9.31.86",
"versionType": "custom"
},
{
"lessThan": "9.32.147.44",
"status": "affected",
"version": "9.32.147",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "9.33.104",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"packageName": "org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.publisher.v1.common",
"product": "WSO2 API Manager Publisher REST API V4",
"vendor": "WSO2",
"versions": [
{
"lessThan": "9.30.67.156",
"status": "affected",
"version": "9.30.67",
"versionType": "custom"
},
{
"lessThan": "9.31.86.141",
"status": "affected",
"version": "9.31.86",
"versionType": "custom"
},
{
"lessThan": "9.32.147.44",
"status": "affected",
"version": "9.32.147",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "9.33.104",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"packageName": "org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.api",
"product": "WSO2 Carbon API Management API",
"vendor": "WSO2",
"versions": [
{
"lessThan": "9.30.67.156",
"status": "affected",
"version": "9.30.67",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "9.33.104",
"versionType": "custom"
}
]
}
],
"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges.\n\nSuccessful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution."
}
],
"id": "CVE-2026-3418",
"lastModified": "2026-08-07T18:17:14.257",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.3,
"impactScore": 6.0,
"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3418",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-07T17:46:58.452271Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-06T22:17:03.997",
"references": [
{
"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/"
}
],
"sourceIdentifier": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-434"
}
],
"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"type": "Secondary"
}
]
}
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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