CVE-2026-39315

Katalog CVE

CVSS 6.1 · Medium EPSS 0,34%

Kerentanan Incomplete List of Disallowed Inputs pada unjs unhead. Skor CVSS 3.1 6.1 (Medium) menurut github.com.

Deskripsi (NVD)

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() function in packages/unhead/src/plugins/safe.ts decodes HTML entities before checking for blocked URI schemes (javascript:, data:, vbscript:). The decoder uses two regular expressions with fixed-width digit caps. The HTML5 specification imposes no limit on leading zeros in numeric character references. When a padded entity exceeds the regex digit cap, the decoder silently skips it. The undecoded string is then passed to startsWith('javascript:'), which does not match. makeTagSafe() writes the raw value directly into SSR HTML output. The browser's HTML parser decodes the padded entity natively and constructs the blocked URI. This vulnerability is fixed in 2.1.13.

Rincian

Terbit di NVD

9 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.1 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-184: Incomplete List of Disallowed Inputs

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/unjs/unhead/security/advisories/GHSA-95h2-gj7x-gx9w exploit · mitigasi · advisory vendor
• https://github.com/unjs/unhead/commit/961ea781e091853812ffe17f8cda17105d2d2299 patch
• https://github.com/unjs/unhead/releases/tag/v2.1.13 product · release notes