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CVE-2026-46626: CVE-2026-46626: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch

unknown Affects symfony/runtime, symfony/symfony. Feed 2026.10.29.3, updated 2026-10-29; CVE published 2026.

CVE-2026-46626: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch

Package
symfony/runtime Composer
Affected versions
>=5.4.46 and <5.4.52 or >=6.4.14 and <6.4.40 or >=7.1.7 and <7.2.0 or >=7.2.0 and <7.3.0 or >=7.3.0 and <7.4.0 or >=7.4.0 and <7.4.12 or >=8.0.0 and <8.0.12
Fixed in
5.4.52, 6.4.40, 7.4.12, 8.0.12
Severity
unknown
Exploitation
not on CISA KEV
Source
friendsofphp

References

CVE-2026-46626: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch

Package
symfony/symfony Composer
Affected versions
>=5.4.46 and <5.4.52 or >=6.4.14 and <6.4.40 or >=7.1.7 and <7.2.0 or >=7.2.0 and <7.3.0 or >=7.3.0 and <7.4.0 or >=7.4.0 and <7.4.12 or >=8.0.0 and <8.0.12
Fixed in
5.4.52, 6.4.40, 7.4.12, 8.0.12
Severity
unknown
Exploitation
not on CISA KEV
Source
friendsofphp

References

NVD recordsymfony/runtime advisoriessymfony/symfony advisories

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