CVE-2020-26225: Prestashop/productcomments Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-58w4-w77w-qv3w
Share
CVSS 8.7
CWE-79
Published
Advisory Summary

CVE-2020-26225 is a MODERATE (CVSS 8.7) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Prestashop/productcomments libraries in the Packagist ecosystem. The issue involves reflected xss with parameters in postcomment. Remediation is available by upgrading affected packages to version 4.2.0.

CVE-2020-26225 at a Glance

CVE Identifier CVE-2020-26225
GHSA Identifier GHSA-58w4-w77w-qv3w
Severity MODERATE
CVSS v3.1 Base Score 8.7
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Prestashop/productcomments
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2020-26225

To remediate this vulnerability, upgrade all affected Prestashop/productcomments dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

prestashop/productcomments fixed: 4.2.0 
Upgrade prestashop/productcomments to 4.2.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for prestashop/productcomments

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-26225, inspect your project dependencies for Prestashop/productcomments:

inspect dependencies for prestashop/productcomments

Analyze the terminal output to locate any version of Prestashop/productcomments in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.2.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Prestashop/productcomments, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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)

CVE-2020-26225 Affected Prestashop/productcomments Versions

1 component(s)
Fixed Versions:
4.2.0
Product / Package Ecosystem Affected Versions Fixed Version
prestashop/productcomments
 Packagist
≥ 4.0.0
< 4.2.0
4.2.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/PrestaShop/productcomments/security/advisories/GHSA-58w4-w77w-qv3w
NVD — CVE-2020-26225 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26225
Security Fix Commit FIX COMMIT
https://github.com/PrestaShop/productcomments/commit/c56e3e9495c4a0a9c1e7dc43e1bb0fcad2796dbf

Frequently Asked Questions

What is CVE-2020-26225?
CVE-2020-26225 is a security vulnerability in Prestashop/productcomments involving Reflected XSS with parameters in PostComment under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Prestashop/productcomments versions are affected?
Affected versions include releases prior to 4.2.0 across affected packages: prestashop/productcomments.
What version fixes CVE-2020-26225?
Upgrading to 4.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is prestashop/productcomments affected?
Yes, prestashop/productcomments is affected in releases prior to 4.2.0. Upgrade your dependency to 4.2.0 or later.
What is the CVSS score of CVE-2020-26225?
CVE-2020-26225 has a CVSS v3.1 base score of 8.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2020-26225?
CVE-2020-26225 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2020-26225?
Run the dependency tree command: 'inspect dependencies for prestashop/productcomments'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-58w4-w77w-qv3w",
  "modified" : "2021-01-07T22:42:05Z",
  "published" : "2020-11-16T21:23:29Z",
  "aliases" : [ "CVE-2020-26225" ],
  "summary" : "Reflected XSS with parameters in PostComment",
  "details" : "### Impact\nAn attacker could inject malicious web code into the users' web browsers by creating a malicious link.\n\n### Patches\nThe problem is fixed in 4.2.0\n\n### References\n[Cross-site Scripting (XSS) - Reflected (CWE-79) ](https://cwe.mitre.org/data/definitions/79.html)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "prestashop/productcomments"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/PrestaShop/productcomments/security/advisories/GHSA-58w4-w77w-qv3w"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-26225"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PrestaShop/productcomments/commit/c56e3e9495c4a0a9c1e7dc43e1bb0fcad2796dbf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-11-16T21:22:53Z",
    "nvd_published_at" : null
  }
}