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Fencer Intel
critical 9.8

CVE-2019-10196 json

Resource Exhaustion Denial of Service in http-proxy-agent

published 2021-03-19 5 y ago modified 2026-06-17 4 mo ago also GHSA-86wf-436m-h424 , EUVD-2022-0521

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm http-proxy-agent 2.1.0
  • http-proxy-agent_project http-proxy-agent 2.1.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-10196 updated cvss 7.3

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

  • Red Hat Mobile Application Platform 4 nodejs-http-proxy-agent
    affected: no fix planned “Out of support scope”
  • Red Hat Software Collections rh-nodejs8-npm
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat Software Collections rh-nodejs10-npm
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:N/C:P/I:P/A:C
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm http-proxy-agent
<2.1.0
2.1.0

Affected products

  • n/a nodejs-http-proxy-agent

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.