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MEDIUM severity

GHSA-cx2r-mf6x-55rx

MEDIUMFix: PrestaShop/ps_linklist@83e6e0b

GHSA-cx2r-mf6x-55rx is a medium-severity (CVSS 4.1) Cross-site Scripting (XSS) vulnerability in prestashop/ps_linklist. O3 Security confirms whether GHSA-cx2r-mf6x-55rx is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Stored XSS with custom URLs in PrestaShop module ps_linklist

Also known asCVE-2020-5273
Published
Oct 12, 2021
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Jul 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

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 versions3.1.0

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. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  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 GHSA-cx2r-mf6x-55rx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-cx2r-mf6x-55rx is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-cx2r-mf6x-55rx. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

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

Is GHSA-cx2r-mf6x-55rx in your dependencies?

O3 detects GHSA-cx2r-mf6x-55rx across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-cx2r-mf6x-55rx: prestashop/ps_linklist… | O3 Security