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Vulnerability details: VCID-8kq8-2mv9-s3ad
Vulnerability ID VCID-8kq8-2mv9-s3ad
Aliases CVE-2024-50342
GHSA-9c3x-r3wp-mgxm
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 2.8
Risk 1.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00361 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
epss 0.00502 https://api.first.org/data/v1/epss?cve=CVE-2024-50342
cvssv3.1_qr LOW https://github.com/advisories/GHSA-9c3x-r3wp-mgxm
cvssv3.1 3.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
cvssv4 2.3 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
generic_textual LOW https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
cvssv3.1 3.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
cvssv4 2.3 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
generic_textual LOW https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
cvssv3.1 3.1 https://github.com/symfony/symfony
cvssv4 2.3 https://github.com/symfony/symfony
generic_textual LOW https://github.com/symfony/symfony
cvssv3.1 3.1 https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
cvssv4 2.3 https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
generic_textual LOW https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
ssvc Track https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
cvssv3.1 3.1 https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
cvssv3.1_qr LOW https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
cvssv4 2.3 https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
generic_textual LOW https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
ssvc Track https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
cvssv3.1 3.1 https://nvd.nist.gov/vuln/detail/CVE-2024-50342
cvssv4 2.3 https://nvd.nist.gov/vuln/detail/CVE-2024-50342
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2024-50342
cvssv3.1 3.1 https://symfony.com/cve-2024-50342
cvssv4 2.3 https://symfony.com/cve-2024-50342
generic_textual LOW https://symfony.com/cve-2024-50342
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2024-50342
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
https://github.com/symfony/symfony
https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
https://nvd.nist.gov/vuln/detail/CVE-2024-50342
https://symfony.com/cve-2024-50342
GHSA-9c3x-r3wp-mgxm https://github.com/advisories/GHSA-9c3x-r3wp-mgxm
USN-7272-1 https://usn.ubuntu.com/7272-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

changed

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low

none
Vector: 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 Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-2024-50342.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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low

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Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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required

unchanged

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Vector: 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 Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50342.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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physical

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present

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passive

active

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Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/symfony/symfony
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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required

unchanged

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Vector: 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 Found at https://github.com/symfony/symfony
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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none

present

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passive

active

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Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

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Vector: 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 Found at https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

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passive

active

high

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-07T15:26:26Z/ Found at https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

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high

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none
Vector: 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 Found at https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

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none

passive

active

high

low

none

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-07T15:26:26Z/ Found at https://github.com/symfony/symfony/security/advisories/GHSA-9c3x-r3wp-mgxm
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2024-50342
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://nvd.nist.gov/vuln/detail/CVE-2024-50342
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

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low

none

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low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://symfony.com/cve-2024-50342
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://symfony.com/cve-2024-50342
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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passive

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Exploit Prediction Scoring System (EPSS)
Percentile 0.5821
EPSS Score 0.00361
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:51:13.714149+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-9c3x-r3wp-mgxm/GHSA-9c3x-r3wp-mgxm.json 38.0.0