Advisory Database
  • Advisories
  • Dependency Scanning
  1. composer
  2. ›
  3. symfony/symfony
  4. ›
  5. CVE-2017-18343

CVE-2017-18343: Cross-site Scripting

July 20, 2018 (updated September 18, 2018)

The debug handler in Symfony has an XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get` URI.

References

  • nvd.nist.gov/vuln/detail/CVE-2017-18343

Code Behaviors & Features

Detect and mitigate CVE-2017-18343 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 2.7.33, all versions starting from 2.8.0 before 2.8.26, all versions starting from 3.0.0 before 3.2.13, all versions starting from 3.3.0 before 3.3.6

Fixed versions

  • 2.7.33
  • 2.8.26
  • 3.2.13
  • 3.3.6

Solution

Upgrade to versions 2.7.33, 2.8.26, 3.2.13, 3.3.6 or above.

Impact 6.1 MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/symfony/symfony/CVE-2017-18343.yml

Spotted a mistake? Edit the file on GitLab.

  • Site Repo
  • About GitLab
  • Terms
  • Privacy Statement
  • Contact

Page generated Wed, 14 May 2025 12:15:44 +0000.