VDB-311018 · CVE-2025-30360 · GHSA-9jgg-88mc-972h

webpack-dev-server up to 5.2.0 origin validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in webpack-dev-server up to 5.2.0. This issue affects some unknown processing. Such manipulation leads to origin validation. This vulnerability is listed as CVE-2025-30360. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in webpack-dev-server up to 5.2.0 and classified as problematic. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is confidentiality. CVE summarizes:

webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-server users' source code may be stolen when you access a malicious web site with non-Chromium based browser. The `Origin` header is checked to prevent Cross-site WebSocket hijacking from happening, which was reported by CVE-2018-14732. But webpack-dev-server always allows IP address `Origin` headers. This allows websites that are served on IP addresses to connect WebSocket. An attacker can obtain source code via a method similar to that used to exploit CVE-2018-14732. Version 5.2.1 contains a patch for the issue.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-30360 since 03/21/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 264716 (Linux Distros Unpatched Vulnerability : CVE-2025-30360), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.2.1 eliminates this vulnerability. Applying the patch 5c9378bb01276357d7af208a0856ca2163db188e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (264716). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

webpack-dev-server

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 264716
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-30360

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: webpack-dev-server 5.2.1
Patch: 5c9378bb01276357d7af208a0856ca2163db188e

Timelineinfo

03/21/2025 🔍
06/03/2025 +73 days 🔍
06/03/2025 +0 days 🔍
11/21/2025 +171 days 🔍

Sourcesinfo

Advisory: GHSA-9jgg-88mc-972h
Status: Confirmed

CVE: CVE-2025-30360 (🔍)
GCVE (CVE): GCVE-0-2025-30360
GCVE (VulDB): GCVE-100-311018

Entryinfo

Created: 06/03/2025 22:19
Updated: 11/21/2025 19:45
Changes: 06/03/2025 22:19 (64), 09/14/2025 22:58 (2), 10/03/2025 03:31 (12), 11/21/2025 19:45 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.