Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes

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Summary

CVECVE-2026-48489
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-14 20:17:09 UTC
Updated2026-07-14 20:25:54 UTC
DescriptionSymfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, DefaultAuthenticationFailureHandler honored the request-supplied _failure_path parameter when failure_forward: true was enabled, allowing an unauthenticated failing login request to dispatch a subrequest to access_control-protected GET routes that skipped firewall listeners. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-863 | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Symfony Symfony affected < 5.4.53 Not specified
CNA Symfony Symfony affected >= 6.0.0-BETA1, < 6.4.41 Not specified
CNA Symfony Symfony affected >= 7.0.0-BETA1, < 7.4.13 Not specified
CNA Symfony Symfony affected >= 8.0.0-BETA1, < 8.0.13 Not specified
CNA Symfony Security-http affected < 5.4.53 Not specified
CNA Symfony Security-http affected >= 6.0.0-BETA1, < 6.4.41 Not specified
CNA Symfony Security-http affected >= 7.0.0-BETA1, < 7.4.13 Not specified
CNA Symfony Security-http affected >= 8.0.0-BETA1, < 8.0.13 Not specified

References

ReferenceSourceLinkTags
github.com/symfony/symfony/releases/tag/v5.4.53 [email protected] github.com
github.com/symfony/symfony/releases/tag/v6.4.41 [email protected] github.com
github.com/symfony/symfony/commit/c48a4276309e11aedeeb0ce3a89dfbf0b4fe04ff [email protected] github.com
github.com/symfony/symfony/releases/tag/v7.4.13 [email protected] github.com
github.com/symfony/symfony/security/advisories/GHSA-6h46-9jf5-q59x [email protected] github.com
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