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Vulnerability details: VCID-njfv-eyqc-n7bm
Vulnerability ID VCID-njfv-eyqc-n7bm
Aliases CVE-2021-23369
GHSA-f2jv-r9rf-7988
Summary The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23369.json
epss 0.03582 https://api.first.org/data/v1/epss?cve=CVE-2021-23369
epss 0.03582 https://api.first.org/data/v1/epss?cve=CVE-2021-23369
epss 0.03582 https://api.first.org/data/v1/epss?cve=CVE-2021-23369
epss 0.03582 https://api.first.org/data/v1/epss?cve=CVE-2021-23369
cvssv3 9.8 https://github.com/advisories/GHSA-f2jv-r9rf-7988
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-f2jv-r9rf-7988
cvssv3.1 9.8 https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8
generic_textual CRITICAL https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8
cvssv3.1 9.8 https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
generic_textual CRITICAL https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
cvssv3.1 9.8 https://github.com/wycats/handlebars.js
generic_textual CRITICAL https://github.com/wycats/handlebars.js
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2021-23369
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2021-23369
cvssv3.1 9.8 https://security.netapp.com/advisory/ntap-20210604-0008
generic_textual CRITICAL https://security.netapp.com/advisory/ntap-20210604-0008
cvssv3.1 9.8 https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
generic_textual CRITICAL https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
cvssv3.1 9.8 https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
generic_textual CRITICAL https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
cvssv3.1 9.8 https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
generic_textual CRITICAL https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
cvssv3.1 9.8 https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
generic_textual CRITICAL https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23369.json
https://api.first.org/data/v1/epss?cve=CVE-2021-23369
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23369
https://github.com/advisories/GHSA-f2jv-r9rf-7988
https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8
https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
https://github.com/wycats/handlebars.js
https://nvd.nist.gov/vuln/detail/CVE-2021-23369
https://security.netapp.com/advisory/ntap-20210604-0008
https://security.netapp.com/advisory/ntap-20210604-0008/
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
1948761 https://bugzilla.redhat.com/show_bug.cgi?id=1948761
RHSA-2021:2500 https://access.redhat.com/errata/RHSA-2021:2500
RHSA-2021:4032 https://access.redhat.com/errata/RHSA-2021:4032
RHSA-2021:4628 https://access.redhat.com/errata/RHSA-2021:4628
RHSA-2023:1334 https://access.redhat.com/errata/RHSA-2023:1334
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23369.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/wycats/handlebars.js
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23369
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://security.netapp.com/advisory/ntap-20210604-0008
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.88016
EPSS Score 0.03582
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:28:21.859344+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.6.0