# symfony/http-client (Packagist) vulnerabilities

5 known vulnerabilities (1 high, 1 medium, 3 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://packagist.org/packages/symfony/http-client

## Advisories (5)

### [CVE-2026-118517](https://cve.now/CVE-2026-118517): Symfony: HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URLs Without a Well-Formed Authority (Incomplete Fix for…

- Severity: Low 2.3
- Published: Nov 5, 2026
- Affected: from 6.1.0, fixed in 6.4.50; from 7.0.0, fixed in 7.4.23; from 8.0.0, fixed in 8.1.11.

### [CVE-2026-123119](https://cve.now/CVE-2026-123119): Symfony: NoPrivateNetworkHttpClient Does Not Pin the Checked IP of Cached Hosts, Letting DNS Rebinding Enumerate Internal Ports…

- Severity: Low 2.3
- Published: Nov 5, 2026
- Affected: fixed in 5.4.56; from 6.0.0, fixed in 6.4.50; from 7.0.0, fixed in 7.4.23; from 8.0.0, fixed in 8.1.11.

### [CVE-2026-121971](https://cve.now/CVE-2026-121971): Symfony: ScopingHttpClient Sends the Credentials of Its Default Scope to Other Origins Through Network-Path References

- Severity: High 8.2
- Published: Nov 4, 2026
- Affected: fixed in 5.4.56; from 6.0.0, fixed in 6.4.50; from 7.0.0, fixed in 7.4.23; from 8.0.0, fixed in 8.1.11.

### [CVE-2026-48736](https://cve.now/CVE-2026-48736): Symfony: IpUtils::PRIVATE\_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in…

- Severity: Medium 6.9
- Published: Jul 14, 2026
- Affected: from 5.4.0, fixed in 5.4.53.

### [CVE-2024-50342](https://cve.now/CVE-2024-50342): Internal address and port enumeration allowed by NoPrivateNetworkHttpClient in symfony/http-client

- Severity: Low 3.1
- Published: Nov 6, 2024
- Affected: from 4.3.0, fixed in 5.4.47; from 6.0.0, fixed in 6.4.15; from 7.0.0, fixed in 7.1.8.

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