CVE-2024-50342Network attack vector

Internal address enumeration via late hostname filtering

Published Nov 6, 2024 · Updated Nov 7, 2024

Information disclosure in Symfony HttpClient allows remote authenticated users to enumerate internal IP addresses and ports through crafted URLs. NoPrivateNetworkHttpClient checked a hostname or connection IP only after resolution and connection processing, allowing response differences to reveal blocked destinations. Exploitation requires an application to expose attacker-controlled requests through this wrapper; the bounded impact is internal network discovery.

CVSS severity2.3
Low
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Symfony HttpClient allows remote authenticated users to enumerate internal IP addresses and ports through crafted URLs. NoPrivateNetworkHttpClient checked a hostname or connection IP only after resolution and connection processing, allowing response differences to reveal blocked destinations. Exploitation requires an application to expose attacker-controlled requests through this wrapper; the bounded impact is internal network discovery.

The record

CVE
CVE-2024-50342
Published
Nov 6, 2024
Updated
Nov 7, 2024
Vendor
Symfony
Product
Symfony
Classifications
CWE-200, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.4.46
  2. Affected versionversion=>= 6.0.0, < 6.4.14
  3. Affected versionversion=>= 7.0.0, < 7.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Symfony · Symfonyversion=< 5.4.46; version=>= 6.0.0, < 6.4.14; version=>= 7.0.0, < 7.1.7

Published CVSS scores

2.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1046Network Service Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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