{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-09T02:03:10.649","vulnerabilities":[{"cve":{"id":"CVE-2026-31873","sourceIdentifier":"security-advisories@github.com","published":"2026-03-12T18:16:24.387","lastModified":"2026-03-16T17:57:01.537","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Unhead es un gestor de cabeceras de documento y plantillas. Antes de la versión 2.1.11, la comprobación de link.href en makeTagSafe (safe.ts) utiliza String.includes(), que distingue entre mayúsculas y minúsculas. Los navegadores tratan los esquemas URI sin distinguir entre mayúsculas y minúsculas. DATA:text/css,... es lo mismo que data:text/css,... para el navegador, pero 'DATA:...'.includes('data:') devuelve falso. Un atacante puede inyectar CSS arbitrario para la manipulación de la interfaz de usuario o la exfiltración de datos a través de selectores de atributos CSS con retrollamadas de background-image. Esta vulnerabilidad se corrige en la versión 2.1.11."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","baseScore":0.0,"baseSeverity":"NONE","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":0.0},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:unjs:unhead:*:*:*:*:*:*:*:*","versionEndExcluding":"2.1.11","matchCriteriaId":"67F3AFEA-7DE2-46CC-AC50-D8B49F57C37E"}]}]}],"references":[{"url":"https://github.com/unjs/unhead/security/advisories/GHSA-5339-hvwr-7582","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}