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CRITICAL severity

CVE-2021-43789 — prestashop

CRITICALFix: PrestaShop/PrestaShop@6482b9d

CVE-2021-43789 is a critical-severity (CVSS 9.8) SQL Injection vulnerability in prestashop/prestashop. 2 public exploit references exist, so weaponization risk is real. A fix is available for prestashop/prestashop — see the affected versions and patch details below.

SQL injection in prestashop/prestashop

Also known asGHSA-6xxj-gcjq-wgf4
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Oct 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
4.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs92th percentile — riskier than 92% of all scored CVEsHighest risk
1.87%5.89%9.91%13.9%11.7%4.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-43789 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐘prestashop/prestashop

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

PrestaShop is an Open Source e-commerce web application. Versions of PrestaShop prior to 1.7.8.2 are vulnerable to blind SQL injection using search filters with orderBy and sortOrder parameters. The problem is fixed in version 1.7.8.2.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistprestashop/prestashop≥ 1.7.5.0&&< 1.7.8.21.7.8.2composer require prestashop/prestashop:^1.7.8.2

Affected Products

1 product · 1 configurations
Application
prestashopprestashop
≥ 1.7.5.0 && < 1.7.8.2
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

PrestaShop is an Open Source e-commerce web application. Versions of Pre…

github.comGithubJan 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for prestashop/prestashop, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update prestashop/prestashop to 1.7.8.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-43789 is resolved across your whole dependency graph.

  3. Workarounds

    Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Frequently Asked Questions

PrestaShop is an Open Source e-commerce web application. Versions of PrestaShop prior to 1.7.8.2 are vulnerable to blind SQL injection using search filters with `orderBy` and `sortOrder` parameters. The problem is fixed in version 1.7.8.2.
O3 Security · Impact-Aware SCA

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CVE-2021-43789: prestashop — Fixed in 1.7.8.2