GHSA-6x33-pw7p-hmpq
Denial of Service in http-proxy
GHSA-6x33-pw7p-hmpq is a high vulnerability (CVSS 7.5) in http-proxy, published September 4, 2020. No source lists public exploit code. Fixed in http-proxy 1.18.1.
- Severity
- 7.5 HighCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.18.1http-proxy +2 more
Description
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 "$(python -c 'print("x"*1025)')"
Recommendation
Upgrade to version 1.18.1 or later
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Affected packages
| Package | Affected | Fixed |
|---|---|---|
http-proxynpm | before 1.18.1 | 1.18.1 |
http-proxyRoot:npm | before 1.11.1-aikido.2 | 1.11.1-aikido.2 |
@rootio/http-proxyRoot:npm | before 1.11.1-root.io.2 | 1.11.1-root.io.2 |
What each source reports
GitHub Advisories Score used
Denial of Service in http-proxy
Versions of http-proxy prior to 1.18.1 are vulnerable to Denial of Service. An HTTP request with a long body triggers an ERR_HTTP_HEADERS_SENT unhandled exception that crashes the proxy server. This is only possible when the proxy server sets headers in the proxy request using the proxyReq.setHeader function.
For a proxy server running on http://localhost:3000, the following curl request triggers the unhandled exception:curl -XPOST http://localhost:3000 -d "$(python -c 'print("x"*1025)')"
Recommendation
Upgrade to version 1.18.1 or later
- Record
GHSA-6x33-pw7p-hmpq- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-184, CWE-693
- Updated
- 2026-11-02
OSV
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
- Record
GHSA-6x33-pw7p-hmpq- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-184, CWE-693
- Updated
- 2026-11-02
OSVROOT-APP-NPM-GHSA-6x33-pw7p-hmpqNo score
GHSA-6x33-pw7p-hmpq in http-proxy - Patched by Root
Root has patched GHSA-6x33-pw7p-hmpq in the http-proxy package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-GHSA-6x33-pw7p-hmpq- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.