CVE-2019-10196 — nodejs-http-proxy-agent: Denial of Service and data leak due to improper buffer sanitization

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MEDIUM

nodejs-http-proxy-agent: Denial of Service and data leak due to improper buffer sanitization

Published Mar 19, 2021

9.8

MEDIUM

CVSS 3.1

EPSS 1.39%

Description

A flaw was found in http-proxy-agent, prior to version 2.1.0. It was discovered http-proxy-agent passes an auth option to the Buffer constructor without proper sanitization. This could result in a Denial of Service through the usage of all available CPU resources and data exposure through an uninitialized memory leak in setups where an attacker could submit typed input to the auth parameter.

Affected products

Vendor n/a Product Nodejs-Http-Proxy-Agent Default
n/a
- Version
  prior to nodejs-http-proxy-agent 2.1.0
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Nodejs-Http-Proxy-Agent

n/a

Version	Status	Constraints
prior to nodejs-http-proxy-agent 2.1.0	affected	-

Red Hat Enterprise Linux 8

nodejs:10/nodejs

Not affected
Red Hat Mobile Application Platform 4

nodejs-http-proxy-agent

Out of support scope
Red Hat Software Collections

rh-nodejs10-npm

Not affected
Red Hat Software Collections

rh-nodejs8-npm

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 8	nodejs:10/nodejs	Not affected	n/a
Red Hat Mobile Application Platform 4	nodejs-http-proxy-agent	Out of support scope	n/a
Red Hat Software Collections	rh-nodejs10-npm	Not affected	n/a
Red Hat Software Collections	rh-nodejs8-npm	Will not fix	n/a

Ecosystem	Package	Introduced	Fixed
npm	http-proxy-agent	0	2.1.0

Remediation

Red Hat statement

This issue did not affect the versions of nodejs as shipped with Red Hat Enterprise Linux 8 as they already include the patched code. This issue did not affect the versions of rh-nodejs10-nodejs as shipped with Red Hat Software Collections 3 as they already include the patched code.

Metrics

1.39% 0.01392

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01392

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.39% (0.01392)	71.38th	v5 (v2026.06.15)
Sep 20, 2026	1.39% (0.01392)	71.12th	v5 (v2026.06.15)
Jul 20, 2024	0.24% (0.00235)	62.08th	v3 (v2023.03.01)
Dec 3, 2023	0.24% (0.00235)	61.41th	v3 (v2023.03.01)
Mar 7, 2023	0.21% (0.00213)	57.51th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.78% (0.00777)	21.50th	v5 (v2026.06.15)
Apr 14, 2021	0.78% (0.00777)	0.00th	v1

Weaknesses (1)

CWE-665

References (7)

https://access.redhat.com/security/cve/CVE-2019-10196
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1567245
x_refsource_MISCIssue TrackingPatchThird Party Advisory
https://github.com/TooTallNate/node-http-proxy-agent/commit/b7b7cc793c3226aa83f820ce5c277e81862d32eb
https://github.com/advisories/GHSA-86wf-436m-h424
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-10196
https://www.cve.org/CVERecord?id=CVE-2019-10196
https://www.npmjs.com/advisories/607
x_refsource_MISCThird Party Advisory

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2019-10196		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1567245		x_refsource_MISCIssue TrackingPatchThird Party Advisory
https://github.com/TooTallNate/node-http-proxy-agent/commit/b7b7cc793c3226aa83f820ce5c277e81862d32eb
https://github.com/advisories/GHSA-86wf-436m-h424		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-10196
https://www.cve.org/CVERecord?id=CVE-2019-10196
https://www.npmjs.com/advisories/607		x_refsource_MISCThird Party Advisory