CVE-2023-45587Network attack vector

Authenticated script execution via report response reflection

Published Dec 13, 2023 · Updated Jul 8, 2026

Cross-site scripting in Fortinet FortiSandbox 3.1, 3.2, 4.0, 4.2, and 4.4.0 through 4.4.2 allows remote authenticated users to run script. The download PDF report endpoint reflects attacker-controlled request data into its response without neutralizing executable web content. A low-privileged session and victim interaction are required; execution remains in the victim's browser context and does not interrupt the appliance.

CVSS severity3.5
Low
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Fortinet FortiSandbox 3.1, 3.2, 4.0, 4.2, and 4.4.0 through 4.4.2 allows remote authenticated users to run script. The download PDF report endpoint reflects attacker-controlled request data into its response without neutralizing executable web content. A low-privileged session and victim interaction are required; execution remains in the victim's browser context and does not interrupt the appliance.

The record

CVE
CVE-2023-45587
Published
Dec 13, 2023
Updated
Jul 8, 2026
Vendor
Fortinet
Product
FortiSandbox
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2026Record 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=3.1.0 <=3.1.5
  2. Affected versionversion=3.2.0 <=3.2.4
  3. Affected versionversion=4.0.0 <=4.0.6
  4. Affected versionversion=4.2.1 <=4.2.8
  5. Affected versionversion=4.4.0 <=4.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiSandboxversion=3.1.0 <=3.1.5; version=3.2.0 <=3.2.4; version=4.0.0 <=4.0.6; version=4.2.1 <=4.2.8; version=4.4.0 <=4.4.2

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5Fortinet, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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