What is CVE-2026-39315?

CVE-2026-39315 is a medium-severity vulnerability in Unjs Unhead, classified under Incomplete List of Disallowed Inputs. CVSS score: 6.1/10. Published 2026-04-09.

How severe is CVE-2026-39315?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Unjs Unhead

CVE-2026-39315

Unhead is a document head and template manager. Prior to 2.1.13, useHeadSafe() is the composable that Nuxt's own documentation explicitly recommends for rendering user-supplied content in <head> safely. Internally, the hasDangerousProtocol…

EPSS: 0.001 (25.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Unjs Unhead — versions < 2.1.13

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

https://github.com/unjs/unhead/security/advisories/GHSA-95h2-gj7x-gx9w (x_refsource_CONFIRM)
https://github.com/unjs/unhead/commit/961ea781e091853812ffe17f8cda17105d2d2299 (x_refsource_MISC)
https://github.com/unjs/unhead/releases/tag/v2.1.13 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-39315?: CVE-2026-39315 is a medium-severity vulnerability in Unjs Unhead, classified under Incomplete List of Disallowed Inputs. CVSS score: 6.1/10. Published 2026-04-09.
How severe is CVE-2026-39315?: Medium severity. CVSS v3 base score is 6.1 out of 10.