CVE-2023-39527

PrestaShop XSS vulnerability through Validate::isCleanHTML method

8.3 HighFix available

PrestaShop is an open source e-commerce web application. Versions prior to 1.7.8.10, 8.0.5, and 8.1.1 are vulnerable to cross-site scripting through the isCleanHTML method. Versions 1.7.8.10, 8.0.5, and 8.1.1 contain a patch. There are no known workarounds.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: High
Availability: High

Exploit likelihood

0.51%Up 0.5 points since Aug 8, 2023

What each source reports

CVE List Score used 8.3

PrestaShop XSS vulnerability through Validate::isCleanHTML method

Record: CVE-2023-39527
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
Weakness: CWE-79, CWE-116
Updated: 2026-11-02

EUVDEUVD-2023-2385 8.3

Record: EUVD-2023-2385
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xw2r-f8xv-c8xp 8.3

PrestaShop XSS injection through Validate::isCleanHTML method

Impact

xss injection through isCleanHTML method

Patches

1.7.8.10 8.0.5 8.1.1

Found by

Aleksey Solovev (Positive Technologies)

Workarounds

References

Record: GHSA-xw2r-f8xv-c8xp
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
Weakness: CWE-116
Updated: 2026-11-02

NVD 8.3

Record: CVE-2023-39527
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
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, CWE-116
Updated: 2026-11-02

OSV 8.3

PrestaShop XSS vulnerability through Validate::isCleanHTML method

Record: CVE-2023-39527
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
Weakness: CWE-116, CWE-79
Updated: 2026-11-02

OSVGHSA-xw2r-f8xv-c8xp 8.3

PrestaShop XSS injection through Validate::isCleanHTML method

Impact

xss injection through isCleanHTML method

Patches

1.7.8.10 8.0.5 8.1.1

Found by

Aleksey Solovev (Positive Technologies)

Workarounds

References

Record: GHSA-xw2r-f8xv-c8xp
CVSS 3.1: 8.3 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H
Weakness: CWE-116
Updated: 2026-11-02

Affected products

prestashop

Affected packages

Affected packages
Package	Affected	Fixed
`prestashop/prestashop` Packagist	8.1.0 to 8.1.0	8.1.1
`prestashop/prestashop` Packagist	8.0.0 up to 8.0.5	8.0.5
`prestashop/prestashop` Packagist	before 1.7.8.10	1.7.8.10
`prestashop/prestashop` Packagist	8.1.0 up to 8.1.1	8.1.1
`prestashop/prestashop` Packagist	8.0.0 up to 8.0.5, plus listed versions 8.0.18.0.28.0.38.0.4	8.0.5
`prestashop/prestashop` Packagist	before 1.7.8.10, plus listed versions 1.7.0.01.7.0.0-beta.1.01.7.0.0-beta.2.01.7.0.0-beta.3.01.7.0.0-beta.4.0 Show 45 moreShow less 1.7.0.0-rc.0.01.7.0.0-rc.1.01.7.0.0-rc.2.01.7.0.11.7.0.21.7.0.31.7.0.41.7.0.51.7.0.61.7.1.01.7.1.11.7.1.21.7.2.01.7.2.0-rc.1.01.7.2.11.7.2.21.7.2.31.7.2.41.7.2.51.7.3.01.7.3.11.7.3.21.7.3.31.7.3.41.7.4.01.7.4.0-beta.11.7.4.11.7.4.21.7.4.31.7.4.41.7.5.01.7.5.0-beta.11.7.5.0-rc.11.7.5.11.7.5.21.7.6.01.7.6.0-beta.11.7.6.0-rc.11.7.6.0-rc.21.7.6.11.7.6.21.7.6.31.7.6.41.7.6.51.7.6.6	1.7.8.10

History

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

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

In short

CVE-2023-39527 is a high vulnerability (CVSS 8.3) in Prestashop, published August 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 44th percentile. Fixed in prestashop/prestashop 8.1.1.

References

This page doesn't list everything

Left out here: 27 versions. The JSON record has them.