Technology · Handlebars project
Handlebars project Handlebars vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 13 vulnerabilities in Handlebars project Handlebars: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, Handlebars.js property access validation bypass in container.lookup, was published on 29 March 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Handlebars project Handlebars
Handlebars is a logic-less templating engine for JavaScript.
Latest Handlebars project Handlebars vulnerabilities
- Handlebars.js property access validation bypass in container.lookuplowCVSS 3.1
- CVE-2026-33916: Handlebars.js prototype pollution XSS via partial template injectionlowCVSS 3.1EPSS 0.4%
- CVE-2021-23383: Handlebars prototype pollution in template compilationlowCVSS 3.1EPSS 4.5%
- CVE-2019-20922: Handlebars regular expression denial of servicelowCVSS 3.1EPSS 3.8%
- CVE-2019-20920: Handlebars arbitrary code execution in lookup helperlowCVSS 3.1
- Handlebars arbitrary code execution via lookup helperinfo
- Handlebars prototype pollution in template processinginfoCVSS 7.5
- Handlebars arbitrary code execution in lookup helperlowCVSS 3.1
- Handlebars Denial of Service in template parserinfo
- CVE-2019-19919: Handlebars prototype pollution remote code executionlowCVSS 3.1EPSS 7.1%
- Handlebars prototype pollution remote code executionlowCVSS 3.1
- Handlebars moderate severity vulnerability (withdrawn)info
- CVE-2015-8861: Handlebars.js XSS in unquoted template attributesmediumCVSS 6.1EPSS 2.6%
Most severe Handlebars project Handlebars vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2015-8861: Handlebars.js XSS in unquoted template attributesmediumCVSS 6.1EPSS 2.6%
- CVE-2019-19919: Handlebars prototype pollution remote code executionlowCVSS 3.1EPSS 7.1%
- CVE-2021-23383: Handlebars prototype pollution in template compilationlowCVSS 3.1EPSS 4.5%
- CVE-2019-20922: Handlebars regular expression denial of servicelowCVSS 3.1EPSS 3.8%
- CVE-2026-33916: Handlebars.js prototype pollution XSS via partial template injectionlowCVSS 3.1EPSS 0.4%
- Handlebars.js property access validation bypass in container.lookuplowCVSS 3.1
- CVE-2019-20920: Handlebars arbitrary code execution in lookup helperlowCVSS 3.1
- Handlebars arbitrary code execution in lookup helperlowCVSS 3.1
- Handlebars prototype pollution remote code executionlowCVSS 3.1
- Handlebars prototype pollution in template processinginfoCVSS 7.5
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/handlebars.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Handlebars project Handlebars vulnerabilities", https://junglewise.ai/threats/technologies/handlebars, 28 September 2026.