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MEDIUM severity

CVE-2020-5273 — ps_linklist

MEDIUMFix: PrestaShop/ps_linklist@83e6e0b

CVE-2020-5273 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in prestashop/ps_linklist. A fix is available for prestashop/ps_linklist — see the affected versions and patch details below.

Stored XSS with custom URLs in PrestaShop module ps_linklist

Also known asGHSA-cx2r-mf6x-55rx
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs51th percentile — riskier than 51% of all scored CVEsHighest risk
0.00%0.40%0.80%1.20%0.3%0.7%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-5273 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/ps_linklist

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

Stored XSS when using custom URLs.

Patches

The problem is fixed in 3.1.0

References

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

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistprestashop/ps_linklistall versions3.1.0composer require prestashop/ps_linklist:^3.1.0

Affected Products

1 product · 1 configurations
Application
prestashop linklistprestashop
≥ 3.0.0 && < 3.1.0
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/ps_linklist, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update prestashop/ps_linklist to 3.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-5273 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 Stored XSS when using custom URLs. ### Patches The problem is fixed in 3.1.0 ### References [Cross-site Scripting (XSS) - Stored (CWE-79)](https://cwe.mitre.org/data/definitions/79.html)
O3 Security · Impact-Aware SCA

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CVE-2020-5273: ps_linklist XSS — Fixed in 3.1.0