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Vulnerability details: VCID-81p2-vehj-hub1
Vulnerability ID VCID-81p2-vehj-hub1
Aliases CVE-2026-33940
GHSA-xhpv-hc6g-r9c6
Summary handlebars.js: Handlebars.js: Arbitrary code execution via crafted template context
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 8.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33940.json
epss 0.00032 https://api.first.org/data/v1/epss?cve=CVE-2026-33940
epss 0.00032 https://api.first.org/data/v1/epss?cve=CVE-2026-33940
epss 0.00032 https://api.first.org/data/v1/epss?cve=CVE-2026-33940
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-xhpv-hc6g-r9c6
cvssv3.1 8.1 https://github.com/handlebars-lang/handlebars.js
generic_textual HIGH https://github.com/handlebars-lang/handlebars.js
cvssv3.1 8.1 https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
generic_textual HIGH https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
ssvc Track* https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
cvssv3.1 8.1 https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
generic_textual HIGH https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
ssvc Track* https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
cvssv3.1 8.1 https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
cvssv3.1_qr HIGH https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
generic_textual HIGH https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
ssvc Track* https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2026-33940
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-33940
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33940.json
https://api.first.org/data/v1/epss?cve=CVE-2026-33940
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33940
https://github.com/handlebars-lang/handlebars.js
https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
https://nvd.nist.gov/vuln/detail/CVE-2026-33940
1132141 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1132141
2452521 https://bugzilla.redhat.com/show_bug.cgi?id=2452521
GHSA-xhpv-hc6g-r9c6 https://github.com/advisories/GHSA-xhpv-hc6g-r9c6
RHSA-2026:10175 https://access.redhat.com/errata/RHSA-2026:10175
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33940.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:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
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: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-03-30T15:40:28Z/ Found at https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
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: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-03-30T15:40:28Z/ Found at https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
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: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-03-30T15:40:28Z/ Found at https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-xhpv-hc6g-r9c6
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-33940
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 0.09841
EPSS Score 0.00032
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:31:58.740529+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33940.json 38.6.0