CVE-2019-18886

Description

An issue was discovered in Symfony 4.2.0 to 4.2.11 and 4.3.0 to 4.3.7. The ability to enumerate users was possible due to different handling depending on whether the user existed when making unauthorized attempts to use the switch users functionality. This is related to symfony/security.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.55% Top 20%
Vendor Advisory symfony.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/symfony/symfony/releases/tag/v4.3.8 release notes
https://symfony.com/blog/symfony-4-3-8-released release notes
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionality vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-18886?
CVE-2019-18886 has been scored as a medium severity vulnerability.
How to fix CVE-2019-18886?
To fix CVE-2019-18886, 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-2019-18886 being actively exploited in the wild?
It is possible that CVE-2019-18886 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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