Prototype Pollution in Handlebarsjs Handlebars
CVE-2021-23383
The package handlebars before 4.7.7 are vulnerable to Prototype Pollution when selecting certain compiling options to compile templates coming from an untrusted source.
Vulnerability class: Prototype Pollution
EPSS: 0.045 (90.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Handlebarsjs Handlebars
- Netapp E-series_performance_analyzer
- N/a Handlebars — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23383?
- CVE-2021-23383 is a medium-severity vulnerability in Handlebarsjs Handlebars, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.6/10. Published 2021-05-04.
- How severe is CVE-2021-23383?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2021-23383 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.