CVE-2021-214245.3MediumCWE-200

CVE-2021-21424: Prevent user enumeration using Guard or the new Authenticator-based Security

symfony

Vendor fix available · Affected: symfony · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.6%probability of exploitation in the next 30 days

76th percentile

050100

Higher than 76% of scored CVEs

5.3MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

symfony · symfony>= 2.8.0, < 3.4.48; >= 4.0.0, < 4.4.23; >= 5.0.0, < 5.2.8

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Information Exposure · Information Disclosure
Vendor: symfony
Published: May 2021
Band: Possible (1 to 10%), May 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-21424 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.