SecuriTricks - CVE-2025-34336

Description

eGovFramework/egovframe-common-components versions up to and including 4.3.1 contain an unauthenticated file upload vulnerability via the /utl/wed/insertImage.do and /utl/wed/insertImageCk.do image upload endpoints. These controllers accept multipart requests without authentication, pass the uploaded content to a shared upload helper, and store the file on the server under a framework-controlled path. The framework then returns a download URL that can be used to retrieve the uploaded content, including an attacker-controlled Content-Type within the limits of the image upload functionality. While a filename extension whitelist is enforced, the attacker fully controls the file contents. The response MIME type used is also attacker-controlled when the file is served up to version < 4.1.2. Since version 4.1.2, it is possible to download any image uploaded with any whitelisted content type. But any file uploaded other than an image will be served with the `application/octet-stream` content type (the content type is no longer controlled by the attacker since version 4.1.2). This enables an unauthenticated attacker to use any affected application as a persistent file hosting service for arbitrary content under the application's origin. KISA/KrCERT has identified this unpatched vulnerability as "KVE-2023-5280."

Product(s) Impacted

Product	Versions
egovframe-common-components	<=4.3.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-434

Unrestricted Upload of File with Dangerous Type

The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.

References

https://github.com/eGovFramework/egovframe-common-components

https://pierrekim.github.io/advisories/2025-egovframe.txt

https://pierrekim.github.io/blog/2025-11-20-egovframe-2-vulnerabilities.html

https://www.egovframe.go.kr/eng/sub.do?menuNo=2

https://www.vulncheck.com/advisories/egovframework-unauthenticated-file-upload-via-web-editor-image-upload-endpoints

CVSS Score

6.9 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: NONE
Scope:
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: NONE
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: Nov. 19, 2025, 5:15 p.m.
Last Modified: Nov. 19, 2025, 7:14 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

disclosure@vulncheck.com

CVE-2025-34336