Vendor
UnJS vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in UnJS: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, H3 denial of service via unbounded chunked cookie count, was published on 6 September 2026. Nothing was published in the last eight weeks. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About UnJS
Community organization that develops JavaScript utilities and tools.
UnJS technologies
Latest UnJS vulnerabilities
- H3 denial of service via unbounded chunked cookie counthighCVSS 7.5
- CVE-2026-44373: Nitro proxy route rule bypass via percent-encoded path traversalmediumCVSS 5.3EPSS 0.6%
- CVE-2026-44372: Nitro open redirect via protocol-relative URL bypass in wildcard rulesmediumCVSS 6.1EPSS 0.4%
- CVE-2026-39315: Unhead hasDangerousProtocol bypass via padded HTML entitiesmediumCVSS 6.1EPSS 0.3%
- CVE-2026-35209: unjs defu prototype pollution in defaults merginghighCVSS 7.5EPSS 0.5%
Most severe UnJS vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-35209: unjs defu prototype pollution in defaults merginghighCVSS 7.5EPSS 0.5%
- H3 denial of service via unbounded chunked cookie counthighCVSS 7.5
- CVE-2026-44372: Nitro open redirect via protocol-relative URL bypass in wildcard rulesmediumCVSS 6.1EPSS 0.4%
- CVE-2026-39315: Unhead hasDangerousProtocol bypass via padded HTML entitiesmediumCVSS 6.1EPSS 0.3%
- CVE-2026-44373: Nitro proxy route rule bypass via percent-encoded path traversalmediumCVSS 5.3EPSS 0.6%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many UnJS vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/unjs)<a href="https://junglewise.ai/threats/vendors/unjs"><img src="https://junglewise.ai/threats/vendors/unjs/badge.svg" alt="UnJS vulnerabilities" /></a>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/vendors/unjs.json, and this page as text at https://junglewise.ai/threats/vendors/unjs.md, 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, "UnJS vulnerabilities", https://junglewise.ai/threats/vendors/unjs, 11 November 2026.