CVE-2019-18886
Published:November 21, 2019
Updated:May 17, 2026
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.
Affected Packages
symfony/security-http (PHP):
Affected version(s) >=v4.3.0 <v4.3.8Fix Suggestion:
Update to version v4.3.8symfony/security-http (PHP):
Affected version(s) >=v4.1.0 <v4.2.12Fix Suggestion:
Update to version v4.2.12symfony/symfony (PHP):
Affected version(s) >=v4.3.0 <v4.3.8Fix Suggestion:
Update to version v4.3.8symfony/symfony (PHP):
Affected version(s) >=v4.1.0 <v4.2.12Fix Suggestion:
Update to version v4.2.12Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
1.55