CVE-2019-10909

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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.78% Top 30%
Vendor Advisory symfony.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.synology.com/security/advisory/Synology_SA_19_19 third party advisory
https://www.drupal.org/sa-core-2019-005 third party advisory
https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engine vendor advisory
https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2019-10909?
CVE-2019-10909 has been scored as a medium severity vulnerability.
How to fix CVE-2019-10909?
To fix CVE-2019-10909, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-10909 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-10909 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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