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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.045 (91.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000
Affected products
- Handlebarsjs Handlebars
- NetApp E-Series Performance Analyzer
- Handlebars — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2eb… (Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-JS-HANDLEBARS-1279029 (Exploit, Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1279030 (Exploit, Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1279031 (Exploit, Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1279032 (Exploit, Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210618-0007/ (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.