CVE-2019-18886
MEDIUM
5.3
CVSS Score
Published: November 21, 2019 at 05:41 PM UTC
Updated: June 17, 2026 at 02:25 AM UTC
1 product affected across 1 vendorSymfony
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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Symfony· Sensiolabsdrupal
95%4.2.0 ≤ v ≤ 4.2.114.3.0 ≤ v ≤ 4.3.7
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCx_refsource_CONFIRMRelease Notes
Source: [email protected]
https://github.com/symfony/symfony/releases/tag/v4.3.8x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionalityx_refsource_MISCx_refsource_CONFIRMRelease Notes
Source: [email protected]
https://symfony.com/blog/symfony-4-3-8-releasedCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-203
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