CVE-2026-31873

NONE

0.0

Descricao

Unhead is a document head and template manager. Prior to 2.1.11, The link.href check in makeTagSafe (safe.ts) uses String.includes(), which is case-sensitive. Browsers treat URI schemes case-insensitively. DATA:text/css,... is the same as data:text/css,... to the browser, but 'DATA:...'.includes('data:') returns false. An attacker can inject arbitrary CSS for UI redressing or data exfiltration via CSS attribute selectors with background-image callbacks. This vulnerability is fixed in 2.1.11.

Detalhes CVE

Pontuacao CVSS v3.10.0

SeveridadeNONE

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/12/2026

Ultima modificacao3/16/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

unjs:unhead

Fraquezas (CWE)

CWE-79

Referencias

https://github.com/unjs/unhead/security/advisories/GHSA-5339-hvwr-7582(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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