CVE-2026-48489

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

HIGH

7.5

CVSS Score

Published: July 14, 2026 at 07:14 PM UTC

Updated: July 16, 2026 at 03:16 PM UTC

3 products affected across 2 vendorsSymfonySymfonySecurity HTTP

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

Symfony 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Symfony · Sensiolabsdrupal

95%

v < 5.4.536.0.0 ≤ v < 6.4.417.0.0 ≤ v < 7.4.138.0.0 ≤ v < 8.0.13

Affected range stops below 5.4.53, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.4.41, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.4.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.0.13, so it looks safe — our inference, not a vendor statement

Security HTTP · Symfony

60%

v < 5.4.53v < 6.4.41v < 7.4.13v < 8.0.13

Affected range stops below 5.4.53, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.4.41, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.4.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.0.13, so it looks safe — our inference, not a vendor statement

Symfony · Symfonycomposer

60%

v < 5.4.53v < 6.4.41v < 7.4.13v < 8.0.13

Affected range stops below 5.4.53, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.4.41, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.4.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.0.13, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_CONFIRMPatchVendor Advisory

Source: cverecord

https://github.com/symfony/symfony/security/advisories/GHSA-6h46-9jf5-q59x

x_refsource_MISCPatch

Source: cverecord

https://github.com/symfony/symfony/commit/c48a4276309e11aedeeb0ce3a89dfbf0b4fe04ff

x_refsource_MISCProductRelease Notes

Source: cverecord

https://github.com/symfony/symfony/releases/tag/v5.4.53

x_refsource_MISCProductRelease Notes

Source: cverecord

https://github.com/symfony/symfony/releases/tag/v6.4.41

x_refsource_MISCProductRelease Notes

Source: cverecord

https://github.com/symfony/symfony/releases/tag/v7.4.13

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-863

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