symfony/security-http Security Advisories for v4.3.4 (1)
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                        [MEDIUM] CVE-2019-18886: Prevent user enumeration using switch user functionalityPKSA-96vf-z7pm-9yfb CVE-2019-18886 GHSA-4vpc-5jx4-cfqg Affected version: >=4.1.0,<4.2.0|>=4.2.0,<4.2.12|>=4.3.0,<4.3.8 Reported by: 
 GitHub, FriendsOfPHP/security-advisories