CVE-2023-3535Network attack vector

Cross-site scripting via unneutralized preview URL input

Published Jul 7, 2023 · Updated Nov 21, 2024

Cross-site scripting in SimplePHPscripts FAQ Script PHP 2.3 allows remote attackers to run script in a victim's browser via /preview.php. The URL Parameter Handler places manipulated URL input into preview page content without sufficient neutralization, although the exact parameter is undisclosed. A victim must load the crafted content, and public records identify no server-side consequence.

CVSS severity6.1
Medium
EPSS probability0.36%
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 SimplePHPscripts FAQ Script PHP 2.3 allows remote attackers to run script in a victim's browser via /preview.php. The URL Parameter Handler places manipulated URL input into preview page content without sufficient neutralization, although the exact parameter is undisclosed. A victim must load the crafted content, and public records identify no server-side consequence.

The record

CVE
CVE-2023-3535
Published
Jul 7, 2023
Updated
Nov 21, 2024
Vendor
SimplePHPscripts
Product
FAQ Script PHP
Classifications
CWE-79, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2024Record 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=2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

SimplePHPscripts · FAQ Script PHPversion=2.3

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS: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
PrivilegesUnavailable
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.

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Technologies

Your stack

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Your stack

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