What is CVE-2023-39527?

CVE-2023-39527 is a high-severity vulnerability in Prestashop, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2023-08-07.

How severe is CVE-2023-39527?

High severity. CVSS v3 base score is 8.3 out of 10.

Is CVE-2023-39527 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Prestashop

CVE-2023-39527

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-08-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (41.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Prestashop — versions = 8.1.0, < 1.7.8.10, >= 8.0.0, < 8.0.5

Weakness classification (CWE)

Public proof-of-concept exploits

dnkhack/fixcve2023_

References

github.com/PrestaShop/PrestaShop/security/advisories/GHSA-xw2r-f8xv-c8xp (Vendor Advisory)
github.com/PrestaShop/PrestaShop/commit/afc14f8eaa058b3e6a20ac43e033ee2656fb88b4 (Patch)

Frequently asked questions

What is CVE-2023-39527?: CVE-2023-39527 is a high-severity vulnerability in Prestashop, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2023-08-07.
How severe is CVE-2023-39527?: High severity. CVSS v3 base score is 8.3 out of 10.
Is CVE-2023-39527 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.