Vulnerability-Lookup

CVE-2026-3418 (GCVE-0-2026-3418)

Vulnerability from cvelistv5 – Published: 2026-08-06 17:32 – Updated: 2026-08-06 17:32

Title

Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution

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.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

WSO2

References

1 reference

URL	Tags
https://security.docs.wso2.com/en/latest/security…	vendor-advisory

Impacted products

7 products

Vendor	Product	Version
WSO2	WSO2 API Manager	Affected: 4.4.0 , < 4.4.0.67 (custom) Affected: 4.5.0 , < 4.5.0.52 (custom) Affected: 4.6.0 , < 4.6.0.16 (custom)
WSO2	WSO2 Traffic Manager	Affected: 4.5.0 , < 4.5.0.51 (custom) Affected: 4.6.0 , < 4.6.0.16 (custom)
WSO2	WSO2 API Control Plane	Affected: 4.5.0 , < 4.5.0.53 (custom) Affected: 4.6.0 , < 4.6.0.17 (custom)
WSO2	WSO2 Universal Gateway	Affected: 4.5.0 , < 4.5.0.52 (custom) Affected: 4.6.0 , < 4.6.0.16 (custom)
WSO2	WSO2 Carbon API Management Implementation	Affected: 9.30.67 , < 9.30.67.156 (custom) Affected: 9.31.86 , < 9.31.86.141 (custom) Affected: 9.32.147 , < 9.32.147.44 (custom) Unaffected: 9.33.104 , ≤ * (custom)
WSO2	WSO2 API Manager Publisher REST API V4	Affected: 9.30.67 , < 9.30.67.156 (custom) Affected: 9.31.86 , < 9.31.86.141 (custom) Affected: 9.32.147 , < 9.32.147.44 (custom) Unaffected: 9.33.104 , ≤ * (custom)
WSO2	WSO2 Carbon API Management API	Affected: 9.30.67 , < 9.30.67.156 (custom) Unaffected: 9.33.104 , ≤ * (custom)

Show details on NVD website

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To clipboard

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GHSA-XX79-G5WR-VQ89

Vulnerability from github – Published: 2026-08-07 00:31 – Updated: 2026-08-07 00:31

Details

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.

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-3418"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-06T22:17:03Z",
    "severity": "CRITICAL"
  },
  "details": "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": "GHSA-xx79-g5wr-vq89",
  "modified": "2026-08-07T00:31:18Z",
  "published": "2026-08-07T00:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3418"
    },
    {
      "type": "WEB",
      "url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-3418 (GCVE-0-2026-3418)

GHSA-XX79-G5WR-VQ89

Tags

Sightings

Nomenclature