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OpenAdvisories
Medium · 5.4 Public exploit CVE-2019-10909 EUVD-2019-0749GHSA-g996-q5r8-w7g2

Symfony Cross-site Scripting (XSS) vulnerability

Published May 16, 2019 · Updated Aug 4, 2024 · Assigned by mitre

Package: drupal/core Package: drupal/drupal Package: symfony Package: symfony Package: symfony/framework-bundle Package: symfony/symfony Ecosystem: Debian Ecosystem: Packagist Ecosystem: Ubuntu

Description

In Symfony before 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7, validation messages are not escaped, which can lead to XSS when user input is included. This is related to symfony/framework-bundle.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 symfony 3.4.22+dfsg-2 —
Debian 13 symfony 3.4.22+dfsg-2 —
Debian 12 symfony 3.4.22+dfsg-2 —
Debian 9 symfony 2.8.7+dfsg-1.3+deb9u2 DSA-4441-1
Debian 8 symfony 2.3.21+dfsg-4+deb8u5 DLA-1778-1

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS symfony No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 18.04 LTS symfony No fix yet —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • moften/Symfony-CVE-Scanner-PoC- ★ 0 · May 7, 2025

    CVE-2021-21424 - CRLF Injection - CVE-2021-41268 - Host Header Injection - CVE-2022-24894 - WebProfiler abierto - CVE-2019-10909 - Directory Traversal

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist drupal/core >= 8.0.0, < 8.5.15 8.5.15 GHSA-g996-q5r8-w7g2
Packagist drupal/core >= 8.6.0, < 8.6.15 8.6.15 GHSA-g996-q5r8-w7g2
Packagist drupal/drupal >= 8.0.0, < 8.5.15 8.5.15 GHSA-g996-q5r8-w7g2
Packagist drupal/drupal >= 8.6.0, < 8.6.15 8.6.15 GHSA-g996-q5r8-w7g2
Packagist symfony/framework-bundle >= 2.7.0, < 2.7.51 2.7.51 GHSA-g996-q5r8-w7g2
Packagist symfony/framework-bundle >= 2.8.0, < 2.8.50 2.8.50 GHSA-g996-q5r8-w7g2
Packagist symfony/framework-bundle >= 3.0.0, < 3.4.26 3.4.26 GHSA-g996-q5r8-w7g2
Packagist symfony/framework-bundle >= 4.0.0, < 4.1.12 4.1.12 GHSA-g996-q5r8-w7g2
Packagist symfony/framework-bundle >= 4.2.0, < 4.2.7 4.2.7 GHSA-g996-q5r8-w7g2
Packagist symfony/symfony >= 2.7.0, < 2.7.51 2.7.51 GHSA-g996-q5r8-w7g2
Packagist symfony/symfony >= 2.8.0, < 2.8.50 2.8.50 GHSA-g996-q5r8-w7g2
Packagist symfony/symfony >= 3.0.0, < 3.4.26 3.4.26 GHSA-g996-q5r8-w7g2
Packagist symfony/symfony >= 4.0.0, < 4.1.12 4.1.12 GHSA-g996-q5r8-w7g2
Packagist symfony/symfony >= 4.2.0, < 4.2.7 4.2.7 GHSA-g996-q5r8-w7g2

Advisories 3

References