Symfony Open Redirect
An issue was discovered in Symfony 2.7.x before 2.7.38, 2.8.x before 2.8.31, 3.2.x before 3.2.14, and 3.3.x before 3.3.13. DefaultAuthenticationSuccessHandler or DefaultAuthenticationFailureHandler takes the content of the _target_path parameter and generates a redirect response, but no check is performed on the path, which could be an absolute URL to an external domain. This Open redirect vulnerability can be exploited for example to mount effective phishing attacks.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | symfony/security | >= 2.7.0, < 2.7.38, >= 2.8.0, < 2.8.31, >= 3.2.0, < 3.2.14, >= 3.3.0, < 3.3.13 | 2.7.38, 2.8.31, 3.2.14, 3.3.13 |
| Composer package | symfony/security-http | >= 2.7.0, < 2.7.38, >= 2.8.0, < 2.8.31, >= 3.2.0, < 3.2.14, >= 3.3.0, < 3.3.13 | 2.7.38, 2.8.31, 3.2.14, 3.3.13 |
| Composer package | symfony/symfony | >= 2.7.0, < 2.7.38, >= 2.8.0, < 2.8.31, >= 3.2.0, < 3.2.14, >= 3.3.0, < 3.3.13 | 2.7.38, 2.8.31, 3.2.14, 3.3.13 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-16652
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2017-16652.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2017-16652.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16652.yaml
- https://github.com/symfony/symfony
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
- https://symfony.com/blog/cve-2017-16652-open-redirect-vulnerability-on-security-handlers
- https://symfony.com/cve-2017-16652
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-601- Platform
- Composer
- Package
symfony/security, symfony/security-http, symfony/symfony- Disclosed
- 14.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-r7p7-qr7p-2rrf - CC BY 4.0
Vulnerability history: symfony/symfony
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 100
- First → latest
- 11.2019 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 8
- High 28
- Medium 51
- Low 13
Disclosures per year
- 2019: 6
- 2020: 7
- 2021: 6
- 2022: 29
- 2023: 5
- 2024: 16
- 2025: 1
- 2026: 30
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Symfony Open Redirect this entry
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