CVE-2023-26290Network attack vector

Reflected XSS via unneutralized reset-request input

Published Mar 29, 2023 · Updated Feb 12, 2025

Reflected XSS in Forcepoint Cloud Security Gateway before 03/29/2023 allows remote attackers to execute script via a crafted reset link. The login_reset_request.mhtml module returns request-controlled reset data in portal HTML without neutralization that prevents script interpretation. A victim must follow the crafted link; the script then runs in the portal origin and can read or alter data accessible to that browser session.

CVSS severity6.1
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Forcepoint Cloud Security Gateway before 03/29/2023 allows remote attackers to execute script via a crafted reset link. The login_reset_request.mhtml module returns request-controlled reset data in portal HTML without neutralization that prevents script interpretation. A victim must follow the crafted link; the script then runs in the portal origin and can read or alter data accessible to that browser session.

The record

CVE
CVE-2023-26290
Published
Mar 29, 2023
Updated
Feb 12, 2025
Vendor
Forcepoint
Product
Forcepoint Cloud Security Gateway
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <03/29/2023

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Forcepoint · Forcepoint Cloud Security Gatewayversion=0 <03/29/2023

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1ForcepointCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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