Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-ftjz-3fh5-j7dz
Vulnerability ID VCID-ftjz-3fh5-j7dz
Aliases GHSA-6x33-pw7p-hmpq
GMS-2020-737
Summary Denial of Service in http-proxy Versions of `http-proxy` prior to 1.18.1 are vulnerable to Denial of Service. An HTTP request with a long body triggers an `ERR_HTTP_HEADERS_SENT` unhandled exception that crashes the proxy server. This is only possible when the proxy server sets headers in the proxy request using the `proxyReq.setHeader` function. For a proxy server running on `http://localhost:3000`, the following curl request triggers the unhandled exception: ```curl -XPOST http://localhost:3000 -d "$(python -c 'print("x"*1025)')"``` ## Recommendation Upgrade to version 1.18.1 or later
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-184 Incomplete List of Disallowed Inputs
CWE-693 Protection Mechanism Failure
System Score Found at
cvssv3.1 7.5 https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3
generic_textual HIGH https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3
cvssv3.1 7.5 https://github.com/http-party/node-http-proxy/pull/1447/files
generic_textual HIGH https://github.com/http-party/node-http-proxy/pull/1447/files
cvssv3.1 7.5 https://www.npmjs.com/advisories/1486
generic_textual HIGH https://www.npmjs.com/advisories/1486
Reference id Reference type URL
https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3
https://github.com/http-party/node-http-proxy/pull/1447/files
https://www.npmjs.com/advisories/1486
GHSA-6x33-pw7p-hmpq https://github.com/advisories/GHSA-6x33-pw7p-hmpq
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/http-party/node-http-proxy/pull/1447/files
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.npmjs.com/advisories/1486
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

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-04T16:20:22.482434+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/http-proxy/GMS-2020-737.yml 38.6.0