CVE-2016-4423: Symphony Denial of Service Via Overlong Usernames

high Affects symfony/security, symfony/security-http, symfony/symfony. Feed 2026.10.29.1, updated 2026-10-28; published 2022-05-17; advisory modified 2024-12-08.

Symphony Denial of Service Via Overlong Usernames

Package: symfony/security Composer
Affected versions: >=2.3.0 and <2.3.41 or >=2.4.0 and <2.7.13 or >=2.8.0 and <2.8.6 or >=3.0.0 and <3.0.6 or >=2.4.0 and <2.5.0 or >=2.5.0 and <2.6.0 or >=2.6.0 and <2.7.0 or >=2.7.0 and <2.7.13
Fixed in: 2.3.41, 2.7.13, 2.8.6, 3.0.6
Severity: high CVSS 7.5
Exploitation: not on CISA KEV · EPSS 2% (79.2th percentile)
Published: 2022-05-17
Source: osv.dev

References

Symphony Denial of Service Via Overlong Usernames

Package: symfony/security-http Composer
Affected versions: >=2.3.0 and <2.3.41 or >=2.4.0 and <2.7.13 or >=2.8.0 and <2.8.6 or >=3.0.0 and <3.0.6 or >=2.4.0 and <2.5.0 or >=2.5.0 and <2.6.0 or >=2.6.0 and <2.7.0 or >=2.7.0 and <2.7.13
Fixed in: 2.3.41, 2.7.13, 2.8.6, 3.0.6
Severity: high CVSS 7.5
Exploitation: not on CISA KEV · EPSS 2% (79.2th percentile)
Published: 2022-05-17
Source: osv.dev

References

Symphony Denial of Service Via Overlong Usernames

Package: symfony/symfony Composer
Affected versions: >=2.3.0 and <2.3.41 or >=2.4.0 and <2.7.13 or >=2.8.0 and <2.8.6 or >=3.0.0 and <3.0.6 or >=2.4.0 and <2.5.0 or >=2.5.0 and <2.6.0 or >=2.6.0 and <2.7.0 or >=2.7.0 and <2.7.13
Fixed in: 2.3.41, 2.7.13, 2.8.6, 3.0.6
Severity: high CVSS 7.5
Exploitation: not on CISA KEV · EPSS 2% (79.2th percentile)
Published: 2022-05-17
Source: osv.dev

References

NVD record symfony/security advisories symfony/security-http advisories symfony/symfony advisories

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