XSS Vulnerability in Symfony Framework Affecting Multiple Versions
CVE-2019-10909

5.4MEDIUM

Key Information:

Vendor

Sensiolabs

Status
Symfony
Vendor
CVE Published:
16 May 2019

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-10909?

A cross-site scripting (XSS) vulnerability exists in the Symfony Framework where validation messages are not properly escaped. This flaw can be exploited when user input is displayed in web applications, leading to potential injection of malicious scripts. Affected versions include Symfony 2.7 before 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, and earlier versions of 4.x before 4.1.12 and 4.2.x before 4.2.7. It is crucial for developers to upgrade their Symfony installations to mitigate this risk.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Symfony-CVE-Scanner-PoC-
Created by moften

References

https://www.synology.com/security/advisory/Synology_SA_19_19
x_refsource_CONFIRM
https://www.drupal.org/sa-core-2019-005
x_refsource_MISC
https://symfony.com/blog/cve-2019-10909-escape-validation...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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