CVE-2021-21424

Source
https://cve.org/CVERecord?id=CVE-2021-21424
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21424.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-21424
Aliases
Downstream
Published
2021-05-13T16:15:07Z
Modified
2026-08-11T03:47:08Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

Database specific
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "33"
                },
                {
                    "last_affected": "33"
                },
                {
                    "introduced": "34"
                },
                {
                    "last_affected": "34"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "fedoraproject:fedora"
        }
    ]
}
References

Affected packages

Git / github.com/symfony/security-http

Affected ranges

Type
GIT
Repo
https://github.com/symfony/security-http
Events
Database specific
Show details
{
    "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.2.8"
        }
    ],
    "source": "CPE_RANGE"
}

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21424.json"

Git / github.com/symfony/symfony

Affected ranges

Type
GIT
Repo
https://github.com/symfony/symfony
Events
Database specific
Show details
{
    "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.8.0"
        },
        {
            "fixed": "3.4.48"
        },
        {
            "introduced": "4.0.0"
        },
        {
            "fixed": "4.4.23"
        },
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.2.8"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21424.json"