CVE-2023-26290

Name: CVE-2023-26290
Creator: NVD / NIST
Published: 2023-03-29T17:15:07.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2023-26290 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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_reset_request.mhtml modules), Forcepoint Web Security Portal on Hybrid (login_reset_request.mhtml modules) allows Reflected XSS.This issue affects Cloud Security Gateway (CSG): before 03/29/2023; Web Security: before 03/29/2023. . EPSS estimates a 0.35% chance of exploitation in the next 30 days.

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_reset_request.mhtml modules), Forcepoint Web Security Portal on Hybrid (login_reset_request.mhtml modules) allows Reflected XSS.This issue affects Cloud Security Gateway (CSG): before 03/29/2023; Web Security: before 03/29/2023.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.35%

27.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Forcepoint	Cloud Security Gateway	< 2023-03-29
Forcepoint	Web Security	< 2023-03-29

References

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

Timeline

Published: Mar 29, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-26290?

How severe is CVE-2023-26290?

CVE-2023-26290 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2023-26290?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-26290?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST