CVE-2026-106444

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Source
https://cve.org/CVERecord?id=CVE-2026-106444
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106444.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-106444
Aliases
Downstream
CGA (82)
CLEANSTART (1)
CLSA (4)
DEBIAN (1)
ECHO (1)
MINI (11)
UBUNTU (1)
Published
2026-10-06T19:01:14Z
Modified
2026-10-28T02:31:04Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Handlebars: JavaScript Injection via Unsafe Inline Embedding of Precompiled Templates
Details

Handlebars provides the power necessary to let users build semantic templates. From 4.0.0 until 4.7.10, Handlebars.precompile() uses quotedString() in lib/handlebars/compiler/code-gen.js to emit static template text into generated JavaScript without escaping sequences that terminate an enclosing HTML script element. When an application precompiles attacker-controlled template text and embeds the generated source directly in an inline script element, a closing script delimiter can end the element and cause following attacker-controlled markup to be parsed and executed. Ordinary server-side rendering and precompiled templates served as external JavaScript files are not affected. This issue is fixed in version 4.7.10.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-116"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106444.json"
}
References

Affected packages

Git / github.com/handlebars-lang/handlebars.js

Affected ranges

Type
GIT
Repo
https://github.com/handlebars-lang/handlebars.js
Events
Introduced
bff5fab8f9d42e21950be00dcf1cedf4dc1a565b
Fixed
45ce15255e0f430ac6d19742b18e316b7539264e
Fixed
609d1b11c833c9a3e00f56f2f34d22f425446725
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.0.0"
                },
                {
                    "fixed":  "4.7.10"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "609d1b11c833c9a3e00f56f2f34d22f425446725"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.7.10",
            "range":  [
                {
                    "fixed":  "45ce15255e0f430ac6d19742b18e316b7539264e"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v4.*
v4.0.0
v4.0.1
v4.0.10
v4.0.11
v4.0.12
v4.0.2
v4.0.3
v4.0.4
v4.0.5
v4.0.6
v4.0.7
v4.0.8
v4.0.9
v4.1.1
v4.1.2
v4.1.2-0
v4.2.0
v4.2.1
v4.3.0
v4.3.1
v4.3.2
v4.3.3
v4.3.4
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.5.0
v4.5.1
v4.5.2
v4.5.3
v4.6.0
v4.7.0
v4.7.1
v4.7.2
v4.7.3
v4.7.4
v4.7.5
v4.7.6
v4.7.7
v4.7.8
v4.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106444.json"