CVE-2023-26291 - CVE House

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Status published Medium CVE-2023-26291

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...

6.1 CVSS

Vulnerability Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Forcepoint Cloud Security Gateway (CSG) Portal on Web Cloud Security Gateway, Email Security Cloud (login_form.mhtml modules), Forcepoint Web Security Portal on Hybrid (login_form.mhtml modules) allows Reflected XSS.This issue affects Cloud Security Gateway (CSG): before 03/29/2023; Web Security: before 03/29/2023.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Pratik Kumar Singh (@4rch_54m431)

References

https://support.forcepoint.com/s/article/000041617

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Affected Vendor

Forcepoint

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Affected Software

Cloud Security Gateway (CSG), Web Security

Vulnerable Versions:

0

Timeline

Official Publish: March 29th, 2023

Last Modified: February 12th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement