CVE-2019-19919
critical-risk
Published 2019-12-20
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.
Do I need to act?
!
17.8% chance of exploitation in next 30 days
EPSS score — higher than 82% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (4)
Third Party Advisory
https://www.npmjs.com/advisories/1164
Third Party Advisory
https://www.npmjs.com/advisories/1164
70
/ 100
critical-risk
Severity
32/34 · Critical
Exploitability
13/34 · Low
Exposure
25/34 · High