Description
symfony/http-client is a module for the Symphony PHP framework which provides powerful methods to fetch HTTP resources synchronously or asynchronously. When using the `NoPrivateNetworkHttpClient`, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration. As of versions 5.4.46, 6.4.14, and 7.1.7 the `NoPrivateNetworkHttpClient` now filters blocked IPs earlier to prevent such leaks. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| symfony | symfony | < 5.4.46, >= 6.0.0, < 6.4.14, >= 7.0.0, < 7.1.7 | — |
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 | 6.4.15+dfsg-1 | — |
| Debian 13 | symfony | 6.4.15+dfsg-1 | — |
| Debian 12 | symfony | 5.4.23+dfsg-1+deb12u3 | DSA-5809-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | symfony | No fix yet | — |
| Ubuntu 26.04 LTS | symfony | No fix yet | — |
| Ubuntu 25.10 | symfony | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | symfony | 6.4.5+dfsg-3ubuntu3+esm1 | USN-7272-1 |
| Ubuntu Pro 22.04 LTS | symfony | 5.4.4+dfsg-1ubuntu8+esm1 | USN-7272-1 |
| Ubuntu Pro 20.04 LTS | symfony | 4.3.8+dfsg-1ubuntu1+esm2 | USN-7272-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symfony/http-client | >= 4.3.0, < 5.4.47 | 5.4.47 | GHSA-9c3x-r3wp-mgxm |
| Packagist | symfony/http-client | >= 6.0.0, < 6.4.15 | 6.4.15 | GHSA-9c3x-r3wp-mgxm |
| Packagist | symfony/http-client | >= 7.0.0, < 7.1.8 | 7.1.8 | GHSA-9c3x-r3wp-mgxm |
| Packagist | symfony/symfony | >= 4.3.0, < 5.4.47 | 5.4.47 | GHSA-9c3x-r3wp-mgxm |
| Packagist | symfony/symfony | >= 6.0.0, < 6.4.15 | 6.4.15 | GHSA-9c3x-r3wp-mgxm |
| Packagist | symfony/symfony | >= 7.0.0, < 7.1.8 | 7.1.8 | GHSA-9c3x-r3wp-mgxm |
Advisories 2
- USN-7272-1 symfony vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5809-1 symfony - security update Debian Security (DSA / DLA) · Mar 9, 2026