CVE-2019-10196

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
69.1%
KEV
Not listed

Published

March 19, 2021

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 8, 2026
Patch available. Sources: redhat.
redhat Patch Available

1567245 – (CVE-2019-10196) CVE-2019-10196 nodejs-http-proxy-agent: Denial of Service and data leak due to improper buffer sanitization

Affected: Red Hat Enterprise Linux 8 as they already include the patched code.

https://bugzilla.redhat.com/show_bug.cgi?id=1567245

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
http-proxy-agent—2.1.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:24 UTCEPSS rescore
  2. 2026-07-09 19:06 UTCEPSS rescore
  3. 2026-07-08 15:11 UTCEPSS rescore
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  12. 2026-06-30 23:20 UTCEPSS rescore
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  18. 2026-06-27 03:06 UTCEPSS rescore
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  20. 2026-06-25 13:47 UTCEPSS rescore
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  22. 2026-06-24 14:03 UTCEPSS rescore
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  1. 2026-06-22 14:23 UTCEPSS rescore
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  3. 2026-06-21 14:54 UTCEPSS rescore
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  5. 2026-06-21 01:57 UTCEPSS rescore
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  7. 2026-06-19 19:23 UTCEPSS rescore
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  9. 2026-06-18 17:50 UTCEPSS rescore
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  17. 2026-06-11 13:58 UTCEPSS rescore
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  19. 2026-06-10 22:16 UTCEPSS rescore
  20. 2026-06-10 13:19 UTCEPSS rescore
  21. 2026-06-08 14:15 UTCEPSS rescore
  22. 2026-06-08 14:14 UTCEPSS rescore
  23. 2026-06-07 15:23 UTCEPSS rescore
  24. 2026-06-07 15:22 UTCEPSS rescore
  25. 2026-06-06 13:45 UTCEPSS rescore
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  36. 2026-05-31 22:29 UTCEPSS rescore
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  38. 2026-05-31 00:14 UTCEPSS rescore
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  40. 2026-05-29 13:42 UTCEPSS rescore
  41. 2026-05-28 13:43 UTCEPSS rescore
  42. 2026-05-27 13:38 UTCEPSS rescore
  43. 2026-05-26 19:35 UTCEG score recompute
  44. 2026-05-26 13:42 UTCEPSS rescore
  45. 2026-05-26 13:42 UTCEPSS rescore
  46. 2026-05-26 07:17 UTCEPSS rescore
  47. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-10196?
CVE-2019-10196 is a critical vulnerability published on March 19, 2021. 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…
When was CVE-2019-10196 disclosed?
CVE-2019-10196 was first published in the National Vulnerability Database on March 19, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-10196 actively exploited?
CVE-2019-10196 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-10196?
CVE-2019-10196 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-10196?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-10196, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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