🛡️ CVE-2024-50342 — httpclient

🟢 CVSS 3.1 — Low ✅ No Known Exploit CWE-200 NVD
3.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient

Description

When using the NoPrivateNetworkHttpClient, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration.

Resolution

The NoPrivateNetworkHttpClient now filters blocked IPs earlier to prevent such leaks.

The fisrt patch for this issue is available [here](https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b) for branch 5.4.

The second one is available [here](https://github.com/symfony/symfony/commit/b4bf5afdbdcb2fd03da513ee03beeabeb551e5fa) for branch 5.4 also.

Credits

We would like to thank Linus Karlsson and Chris Smith for reporting the issue and Nicolas Grekas for providing the fix.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Weakness class

CVE-2024-50342 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.

Affected software

CVE-2024-50342 is recorded against 3 packages.

  • httpclient (from 7.0.0 up to 7.1.7)
  • symfony/http-client (from 7.0.0 up to 7.1.8)
  • symfony/symfony (from 7.0.0 up to 7.1.8)

Timeline and source

Published on 6 November 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com

CVE-2024-50342 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 3.1
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-200
Public Exploit ✅ No
Source NVD
Published 2024-11-06
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
httpclient 7.0.0 7.1.7
symfony/http-client 7.0.0 7.1.8
symfony/symfony 7.0.0 7.1.8

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