CVE-2026-48489
Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes
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.
INFO
Published Date :
July 14, 2026, 8:17 p.m.
Last Modified :
July 16, 2026, 3:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Symfony to version 5.4.53 or later.
- Update Symfony to version 6.4.41 or later.
- Update Symfony to version 7.4.13 or later.
- Update Symfony to version 8.0.13 or later.
Public PoC/Exploit Available at Github
CVE-2026-48489 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-48489.
| URL | Resource |
|---|---|
| https://github.com/symfony/symfony/commit/c48a4276309e11aedeeb0ce3a89dfbf0b4fe04ff | Patch |
| https://github.com/symfony/symfony/releases/tag/v5.4.53 | Product Release Notes |
| https://github.com/symfony/symfony/releases/tag/v6.4.41 | Product Release Notes |
| https://github.com/symfony/symfony/releases/tag/v7.4.13 | Product Release Notes |
| https://github.com/symfony/symfony/security/advisories/GHSA-6h46-9jf5-q59x | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-48489 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-48489
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-48489 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-48489 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 16, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-48489', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-16T14:39:55.938217Z'} -
Initial Analysis by [email protected]
Jul. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.53 *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.4.41 *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.4.13 *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (excluding) 8.0.13 Added Reference Type GitHub, Inc.: https://github.com/symfony/symfony/commit/c48a4276309e11aedeeb0ce3a89dfbf0b4fe04ff Types: Patch Added Reference Type GitHub, Inc.: https://github.com/symfony/symfony/releases/tag/v5.4.53 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/symfony/symfony/releases/tag/v6.4.41 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/symfony/symfony/releases/tag/v7.4.13 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/symfony/symfony/security/advisories/GHSA-6h46-9jf5-q59x Types: Patch, Vendor Advisory -
New CVE Received by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'symfony', 'product': 'symfony', 'versions': [{'status': 'affected', 'version': '< 5.4.53'}, {'status': 'affected', 'version': '>= 6.0.0-BETA1, < 6.4.41'}, {'status': 'affected', 'version': '>= 7.0.0-BETA1, < 7.4.13'}, {'status': 'affected', 'version': '>= 8.0.0-BETA1, < 8.0.13'}]}, {'vendor': 'symfony', 'product': 'security-http', 'versions': [{'status': 'affected', 'version': '< 5.4.53'}, {'status': 'affected', 'version': '>= 6.0.0-BETA1, < 6.4.41'}, {'status': 'affected', 'version': '>= 7.0.0-BETA1, < 7.4.13'}, {'status': 'affected', 'version': '>= 8.0.0-BETA1, < 8.0.13'}]}] Added 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. Added CVSS V4.0 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 Added CWE CWE-863 Added Reference https://github.com/symfony/symfony/commit/c48a4276309e11aedeeb0ce3a89dfbf0b4fe04ff Added Reference https://github.com/symfony/symfony/releases/tag/v5.4.53 Added Reference https://github.com/symfony/symfony/releases/tag/v6.4.41 Added Reference https://github.com/symfony/symfony/releases/tag/v7.4.13 Added Reference https://github.com/symfony/symfony/security/advisories/GHSA-6h46-9jf5-q59x