Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | symfony | 3.4.0+dfsg-1 | — |
| Debian 13 | symfony | 3.4.0+dfsg-1 | — |
| Debian 12 | symfony | 3.4.0+dfsg-1 | — |
| Debian 9 | symfony | 2.8.7+dfsg-1.3+deb9u1 | DSA-4262-1 |
| Debian 8 | symfony | 2.3.21+dfsg-4+deb8u4 | DLA-1707-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | symfony | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symfony/security | >= 2.7.0, < 2.7.38 | 2.7.38 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security | >= 2.8.0, < 2.8.31 | 2.8.31 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security | >= 3.2.0, < 3.2.14 | 3.2.14 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security | >= 3.3.0, < 3.3.13 | 3.3.13 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security-http | >= 2.7.0, < 2.7.38 | 2.7.38 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security-http | >= 2.8.0, < 2.8.31 | 2.8.31 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security-http | >= 3.2.0, < 3.2.14 | 3.2.14 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/security-http | >= 3.3.0, < 3.3.13 | 3.3.13 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/symfony | >= 2.7.0, < 2.7.38 | 2.7.38 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/symfony | >= 2.8.0, < 2.8.31 | 2.8.31 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/symfony | >= 3.2.0, < 3.2.14 | 3.2.14 | GHSA-r7p7-qr7p-2rrf |
| Packagist | symfony/symfony | >= 3.3.0, < 3.3.13 | 3.3.13 | GHSA-r7p7-qr7p-2rrf |
Advisories 2
- DSA-4262-1 symfony - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1707-1 symfony - security update Debian Security (DSA / DLA) · Mar 9, 2026