CVE-2024-50342: Symfony/http client Symfony Allows Internal Address And Vulnerability

LOW
Advisory Identifier: GHSA-9c3x-r3wp-mgxm
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CVSS 3.1
CWE-200
Published
Advisory Summary

CVE-2024-50342 is a LOW (CVSS 3.1) symfony allows internal address and vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Symfony/http client libraries in the Packagist ecosystem. The issue involves symfony allows internal address and port enumeration by noprivatenetworkhttpclient. Remediation is available by upgrading affected packages to version 5.4.47, 6.4.15, 7.1.8.

CVE-2024-50342 at a Glance

CVE Identifier CVE-2024-50342
GHSA Identifier GHSA-9c3x-r3wp-mgxm
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Symfony/http client
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 3.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-50342

To remediate this vulnerability, upgrade all affected Symfony/http client dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

symfony/http-client fixed: 5.4.47 
Upgrade symfony/http-client to 5.4.47
symfony/http-client fixed: 6.4.15 
Upgrade symfony/http-client to 6.4.15
symfony/http-client fixed: 7.1.8 
Upgrade symfony/http-client to 7.1.8
symfony/symfony fixed: 5.4.47 
Upgrade symfony/symfony to 5.4.47
symfony/symfony fixed: 6.4.15 
Upgrade symfony/symfony to 6.4.15
symfony/symfony fixed: 7.1.8 
Upgrade symfony/symfony to 7.1.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for symfony/http-client

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-50342, inspect your project dependencies for Symfony/http client:

inspect dependencies for symfony/http-client

Analyze the terminal output to locate any version of Symfony/http client in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.4.47), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Symfony/http client, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2024-50342 Affected Symfony/http client Versions

6 component(s)
Fixed Versions:
5.4.476.4.157.1.8
Product / Package Ecosystem Affected Versions Fixed Version
symfony/http-client
 Packagist
≥ 4.3.0
< 5.4.47
5.4.47
symfony/http-client
 Packagist
≥ 6.0.0
< 6.4.15
6.4.15
symfony/http-client
 Packagist
≥ 7.0.0
< 7.1.8
7.1.8
symfony/symfony
 Packagist
≥ 4.3.0
< 5.4.47
5.4.47
symfony/symfony
 Packagist
≥ 6.0.0
< 6.4.15
6.4.15
symfony/symfony
 Packagist
≥ 7.0.0
< 7.1.8
7.1.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
NVD — CVE-2024-50342 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-50342
Security Fix Commit FIX COMMIT
https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
Symfony/http client Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
Symfony/http client Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
Symfony/http client Source Repository REPOSITORY
https://github.com/symfony/symfony
symfony.com/cve-2024-50342 WEB
https://symfony.com/cve-2024-50342

Frequently Asked Questions

What is CVE-2024-50342?
CVE-2024-50342 is a security vulnerability in Symfony/http client involving Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Symfony/http client versions are affected?
Affected versions include releases prior to 5.4.47, 6.4.15, 7.1.8 across affected packages: symfony/http-client, symfony/symfony.
What version fixes CVE-2024-50342?
Upgrading to 5.4.47, 6.4.15, 7.1.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is symfony/http-client affected?
Yes, symfony/http-client is affected in releases prior to 5.4.47, 6.4.15, 7.1.8. Upgrade your dependency to 5.4.47, 6.4.15, 7.1.8 or later.
Is symfony/symfony affected?
Yes, symfony/symfony is affected in releases prior to 5.4.47, 6.4.15, 7.1.8. Upgrade your dependency to 5.4.47, 6.4.15, 7.1.8 or later.
What is the CVSS score of CVE-2024-50342?
CVE-2024-50342 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2024-50342?
CVE-2024-50342 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Packagist dependencies for CVE-2024-50342?
Run the dependency tree command: 'inspect dependencies for symfony/http-client'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9c3x-r3wp-mgxm",
  "modified" : "2026-01-12T19:08:03Z",
  "published" : "2024-11-06T15:16:09Z",
  "aliases" : [ "CVE-2024-50342" ],
  "summary" : "Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient",
  "details" : "### Description\n\nWhen using the `NoPrivateNetworkHttpClient`, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration.\n\n### Resolution\n\nThe `NoPrivateNetworkHttpClient` now filters blocked IPs earlier to prevent such leaks.\n\nThe fisrt patch for this issue is available [here](https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b) for branch 5.4.\n\nThe second one is available [here](https://github.com/symfony/symfony/commit/b4bf5afdbdcb2fd03da513ee03beeabeb551e5fa) for branch 5.4 also.\n\n### Credits\n\nWe would like to thank Linus Karlsson and Chris Smith for reporting the issue and Nicolas Grekas for providing the fix.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/http-client"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.3.0"
      }, {
        "fixed" : "5.4.47"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/http-client"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.4.15"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/http-client"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.1.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.3.0"
      }, {
        "fixed" : "5.4.47"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.4.15"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.1.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-50342"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/symfony/symfony"
  }, {
    "type" : "WEB",
    "url" : "https://symfony.com/cve-2024-50342"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-06T15:16:09Z",
    "nvd_published_at" : "2024-11-06T21:15:05Z"
  }
}