Which versions of Freescout are affected by CVE-2025-48875?

Organizations using FreeScout should be aware of moderate risk from CVE-2025-48875, a cross-site scripting vulnerability rated CVSS 4.6.. A patch is available.

Is there a public PoC exploit available for CVE-2025-48875?

Yes, a public proof-of-concept exploit is available for CVE-2025-48875. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-48875?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Verify Content-Security-Policy and output encoding.

Freescout CVE-2025-48875

Q: What is the CVSS score of CVE-2025-48875?

CVE-2025-48875 has a CVSS 4.0 base score of 4.6 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/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. EPSS exploitation probability: 0.2%.

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-05-30 security-advisories@github.com

XSS Freescout

4.6

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.6 MEDIUM

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:44 vuln.today

Patch released

Mar 28, 2026 - 18:44 nvd

Patch available

PoC Detected

Jun 04, 2025 - 19:54 vuln.today

Public exploit code

CVE Published

May 30, 2025 - 07:15 nvd

MEDIUM 4.6

DescriptionGitHub Advisory

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.181, the system's incorrect validation of last_name and first_name during profile data updates allows for the injection of arbitrary JavaScript code, which will be executed in a flesh-message when the data is deleted, potentially leading to a Cross-Site Scripting (XSS) vulnerability. This issue has been patched in version 1.8.181.

AnalysisAI

FreeScout is a free self-hosted help desk and shared mailbox. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.181, the system's incorrect validation of last_name and first_name during profile data updates allows for the injection of arbitrary JavaScript code, which will be executed in a flesh-message when the data is deleted, potentially leading to a Cross-Site Scripting (XSS) vulnerability. This issue has been patched in version 1.8.181. Affected products include: Freescout. Version information: version 1.8.181.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.