THREATPORT/VULNERABILITY/CVE-2019-19919
CRITICAL SEVERITY

CVE-2019-19919

Handlebars.Js vulnerability

CVSS
9.8
EPSS
7.1%
EPSS pct
94th
Exploited
No known
Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.
Affected vendor
Handlebars.Js Project
Affected product
Handlebars.Js
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2019-12-20

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2019-19919

  • Confirm whether Handlebars.Js Project Handlebars.Js is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-19919.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-19919

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-19919 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2019-19919?

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