Cross Site Scripting Vulnerability in ExpressGateway by FreshFish
CVE-2025-9095

5.1MEDIUM

Key Information:

Vendor

Expressgateway

Status
Express-gateway
Vendor
CVE Published:
17 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9095?

A security flaw has been identified in ExpressGateway, impacting versions up to 1.16.10. The vulnerability resides in the library handling REST Endpoint processing, specifically in 'lib/rest/routes/users.js'. This flaw can lead to Cross Site Scripting (XSS) attacks, which might be executed remotely by an attacker. Although the vendor was made aware of this issue prior to public disclosure, there has been no communication or response. Users are advised to take precautions and monitor for any potential exploit attempts.

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Deploy the Patch

Affected Version(s)

express-gateway 1.16.0

express-gateway 1.16.1

express-gateway 1.16.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-9095 - Proof of Concept

References

https://vuldb.com/?id.320417
vdb-entry
https://vuldb.com/?ctiid.320417
signaturepermissions-required
https://vuldb.com/?submit.627709
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

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