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CVE-2024-51996: Symfony has an Authentication Bypass via RememberMe

high Affects symfony/security-http, symfony/symfony. Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

Symfony has an Authentication Bypass via RememberMe

Package
symfony/security-http Composer
Affected versions
>=5.3.0 and <5.4.47 or >=6.0.0-BETA1 and <6.4.15 or >=7.0.0-BETA1 and <7.1.8 or >=5.3.0 and <5.4.0 or >=5.4.0 and <5.4.47 or >=6.0.0 and <6.1.0 or >=6.1.0 and <6.2.0 or >=6.2.0 and <6.3.0 or >=6.3.0 and <6.4.0 or >=6.4.0 and <6.4.15 or >=7.0.0 and <7.1.0 or >=7.1.0 and <7.1.8
Fixed in
5.4.47, 6.4.15, 7.1.8
Severity
high  CVSS 7.5
Exploitation
not on CISA KEV · EPSS 1% (49.6th percentile)
Published
2024-11-13
Source
osv.dev

References

CVE-2024-51996: Authentication Bypass via persisted RememberMe cookie

Package
symfony/symfony Composer
Affected versions
>=5.3.0 and <5.4.0 or >=5.4.0 and <5.4.47 or >=6.0.0 and <6.1.0 or >=6.1.0 and <6.2.0 or >=6.2.0 and <6.3.0 or >=6.3.0 and <6.4.0 or >=6.4.0 and <6.4.15 or >=7.0.0 and <7.1.0 or >=7.1.0 and <7.1.8
Fixed in
5.4.47, 6.4.15, 7.1.8
Severity
unknown
Exploitation
not on CISA KEV · EPSS 1% (49.6th percentile)
Source
friendsofphp

References

CWE-287CWE-289
NVD recordsymfony/security-http advisoriessymfony/symfony advisories

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