Open redirect in symfony
Priority LOW 29CWE-172Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-601.
Summary
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, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00348 28th percentileScored 2026-11-07
Fix Fixed symfony (symfony): 5.4.53, 6.4.41, 7.4.13 +1routing (symfony): 5.4.53, 6.4.41, 7.4.13 +1+2 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| symfony | symfony | before 5.4.53; 6.0.0-BETA1 to before 6.4.41; 7.0.0-BETA1 to before 7.4.13; 8.0.0-BETA1 to before 8.0.13 | 5.4.53, 6.4.41, 7.4.13, 8.0.13 | Patch available | CNA |
| symfony | routing | before 5.4.53; 6.0.0-BETA1 to before 6.4.41; 7.0.0-BETA1 to before 7.4.13; 8.0.0-BETA1 to before 8.0.13 | 5.4.53, 6.4.41, 7.4.13, 8.0.13 | Patch available | CNA |
| — | symfony/routing (Packagist) | before 5.4.53 | 5.4.53 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/routing (Packagist) | 6.0.0 to before 6.4.41 | 6.4.41 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/routing (Packagist) | 7.0.0 to before 7.4.13 | 7.4.13 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/routing (Packagist) | 8.0.0 to before 8.0.13 | 8.0.13 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/symfony (Packagist) | before 5.4.53 | 5.4.53 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/symfony (Packagist) | 6.0.0 to before 6.4.41 | 6.4.41 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/symfony (Packagist) | 7.0.0 to before 7.4.13 | 7.4.13 | Patch available | GHSA-h5x3-xfc9-m39h |
| — | symfony/symfony (Packagist) | 8.0.0 to before 8.0.13 | 8.0.13 | Patch available | GHSA-h5x3-xfc9-m39h |
- symfony Vendorsymfony Affected before 5.4.53; 6.0.0-BETA1 to before 6.4.41; 7.0.0-BETA1 to before 7.4.13; 8.0.0-BETA1 to before 8.0.13 Fixed in 5.4.53, 6.4.41, 7.4.13, 8.0.13 Patch available CNA
- routing Vendorsymfony Affected before 5.4.53; 6.0.0-BETA1 to before 6.4.41; 7.0.0-BETA1 to before 7.4.13; 8.0.0-BETA1 to before 8.0.13 Fixed in 5.4.53, 6.4.41, 7.4.13, 8.0.13 Patch available CNA
- symfony/routing (Packagist) Vendor— Affected before 5.4.53 Fixed in 5.4.53 Patch available GHSA-h5x3-xfc9-m39h
- symfony/routing (Packagist) Vendor— Affected 6.0.0 to before 6.4.41 Fixed in 6.4.41 Patch available GHSA-h5x3-xfc9-m39h
- symfony/routing (Packagist) Vendor— Affected 7.0.0 to before 7.4.13 Fixed in 7.4.13 Patch available GHSA-h5x3-xfc9-m39h
- symfony/routing (Packagist) Vendor— Affected 8.0.0 to before 8.0.13 Fixed in 8.0.13 Patch available GHSA-h5x3-xfc9-m39h
- symfony/symfony (Packagist) Vendor— Affected before 5.4.53 Fixed in 5.4.53 Patch available GHSA-h5x3-xfc9-m39h
- symfony/symfony (Packagist) Vendor— Affected 6.0.0 to before 6.4.41 Fixed in 6.4.41 Patch available GHSA-h5x3-xfc9-m39h
- symfony/symfony (Packagist) Vendor— Affected 7.0.0 to before 7.4.13 Fixed in 7.4.13 Patch available GHSA-h5x3-xfc9-m39h
- symfony/symfony (Packagist) Vendor— Affected 8.0.0 to before 8.0.13 Fixed in 8.0.13 Patch available GHSA-h5x3-xfc9-m39h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | before 5.4.53; 6.0.0 to before 6.4.41; 7.0.0 to before 7.4.13; 8.0.0 to before 8.0.13 | Vulnerable | sensiolabs |
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* Versions before 5.4.53; 6.0.0 to before 6.4.41; 7.0.0 to before 7.4.13; 8.0.0 to before 8.0.13 Vulnerable ·sensiolabs
Remediation
- Fix · CNA symfony (symfony) Fixed in 5.4.53, 6.4.41, 7.4.13, 8.0.13
- Fix · CNA routing (symfony) Fixed in 5.4.53, 6.4.41, 7.4.13, 8.0.13
- Fix · GHSA-h5x3-xfc9-m39h symfony/routing (Packagist) Fixed in 5.4.53 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/routing (Packagist) Fixed in 6.4.41 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/routing (Packagist) Fixed in 7.4.13 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/routing (Packagist) Fixed in 8.0.13 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/symfony (Packagist) Fixed in 5.4.53 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/symfony (Packagist) Fixed in 6.4.41 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/symfony (Packagist) Fixed in 7.4.13 Advisory →
- Fix · GHSA-h5x3-xfc9-m39h symfony/symfony (Packagist) Fixed in 8.0.13 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-48784
- 2026-10-03 Alias added: GHSA-h5x3-xfc9-m39h
References
Patch 2
Other 7
- https://github.com/symfony/symfony/releases/tag/v5.4.53
- https://github.com/symfony/symfony/releases/tag/v6.4.41
- https://github.com/symfony/symfony/releases/tag/v7.4.13
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/routing/CVE-2026-48784.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-48784.yaml
- https://github.com/symfony/symfony
- https://symfony.com/cve-2026-48784
More symfony vulnerabilities
- TI-2024-33775 Ability to change environment from query in symfony/runtime CVSS 3.1HIGH 7.3
- TI-2026-34283 Twig: The `spaceless` filter implicitly marks its output as safe CVSS 4.0MEDIUM 5.1
- TI-2022-07667 Code injection in Twig CVSS 3.1CRITICAL 9.8
- TI-2018-10028 Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key… CVSS 3.0CRITICAL 9.8
- TI-2026-35851 Incorrect authorization in symfony CVSS 4.0HIGH 8.7
- TI-2026-35264 Improper input validation in symfony CVSS 4.0HIGH 8.3
Sources
- CVE-2026-48784 · CVE Program
- CVE-2026-48784 · NVD
- FIRST EPSS
- GHSA-h5x3-xfc9-m39h · GitHub Advisory Database · CC BY 4.0
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