CVE-2023-4136

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Crafter Engine

7.4 HighFix available

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CrafterCMS Engine on Windows, MacOS, Linux, x86, ARM, 64 bit allows Reflected XSS.This issue affects CrafterCMS: from 4.0.0 through 4.0.2, from 3.1.0 through 3.1.27.

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: High
Integrity: None
Availability: None

Exploit likelihood

1.42%Up 1.4 points since Aug 4, 2023

What each source reports

CVE List Score used 7.4

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Crafter Engine

Record: CVE-2023-4136
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2023-54018 7.4

Record: EUVD-2023-54018
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jfm4-3vv3-fm4v 7.4

Cross-site Scripting (XSS) in CrafterCMS

Record: GHSA-jfm4-3vv3-fm4v
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.4

Record: CVE-2023-4136
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS 3.1: 6.1 MediumCVSS: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

OSV 6.1

Record: CVE-2023-4136
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-jfm4-3vv3-fm4v 7.4

Cross-site Scripting (XSS) in CrafterCMS

Record: GHSA-jfm4-3vv3-fm4v
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

craftercms

Affected packages

Affected packages
Package	Affected	Fixed
`org.craftercms:crafter-engine` Maven	4.0.0 up to 4.0.3	4.0.3
`org.craftercms:crafter-engine` Maven	3.1.0 up to 3.1.28	3.1.28
`org.craftercms:crafter-engine` Maven	4.0.0 up to 4.0.3, plus listed versions 4.0.14.0.2	4.0.3
`org.craftercms:crafter-engine` Maven	3.1.0 up to 3.1.28, plus listed versions 3.1.13.1.103.1.10E3.1.113.1.11E Show 45 moreShow less 3.1.123.1.12E3.1.133.1.13E3.1.143.1.14E3.1.153.1.15E3.1.163.1.16E3.1.173.1.17.43.1.17.4E3.1.17.53.1.17.5E3.1.17.63.1.17.6E3.1.17.73.1.17.7E3.1.17E3.1.183.1.18E3.1.193.1.19E3.1.23.1.203.1.20E3.1.213.1.21E3.1.223.1.22E3.1.233.1.23E3.1.243.1.24E3.1.253.1.25E3.1.263.1.26E3.1.273.1.27E3.1.33.1.43.1.4E3.1.5	3.1.28

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	CrafterCMS Engine - Cross-Site Scripting

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-4136 is a high vulnerability (CVSS 7.4) in Craftercms, published August 3, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.42%, the 72nd percentile. Fixed in org.craftercms:crafter-engine 4.0.3.

References

This page doesn't list everything

Left out here: 9 versions. The JSON record has them.