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Not in CISA KEV
HIGH severity

Reflected XSS with parameters in PostCommentGHSA-58w4-w77w-qv3w

HIGHFix: PrestaShop/productcomments@c56e3e9

GHSA-58w4-w77w-qv3w is a high-severity (CVSS 8.7) Cross-site Scripting (XSS) vulnerability in prestashop/productcomments. A fix is available for prestashop/productcomments — see the affected versions and patch details below.

Also known asCVE-2020-26225
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs59th percentile — riskier than 59% of all scored CVEsHighest risk
0.00%0.46%0.92%1.39%0.3%0.9%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘prestashop/productcomments

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

Impact

An attacker could inject malicious web code into the users' web browsers by creating a malicious link.

Patches

The problem is fixed in 4.2.0

References

Cross-site Scripting (XSS) - Reflected (CWE-79)

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistprestashop/productcomments≥ 4.0.0&&< 4.2.04.2.0composer require prestashop/productcomments:^4.2.0

Affected Products

1 product · 1 configurations
Application
product commentsprestashop
≥ 4.0.0 && < 4.2.0
range

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/productcomments, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update prestashop/productcomments to 4.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-58w4-w77w-qv3w is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### Impact An attacker could inject malicious web code into the users' web browsers by creating a malicious link. ### Patches The problem is fixed in 4.2.0 ### References [Cross-site Scripting (XSS) - Reflected (CWE-79) ](https://cwe.mitre.org/data/definitions/79.html)
O3 Security · Impact-Aware SCA

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Reflected XSS with parameters in PostComment (High 8.7)