CVE-2023-26291
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2023-26291- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2023-30114
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.
- Record
EUVD-2023-30114- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fmgc-gfhr-4q47
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...
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.
- Record
GHSA-fmgc-gfhr-4q47- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-26291- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-26291 is a medium vulnerability (CVSS 6.1) in Forcepoint Cloud Security Gateway (csg), published March 29, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. No source names a fixed version.