CVE-2026-31873

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...

CVE-2026-31860

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered...

CVE-2026-31873

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...

CVE-2026-31860

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered tags. This is the composable that Nuxt docs recommend for safely handling user-generated content. The acceptDataAttrs...

CVE-2026-31873 Unhead has a Bypass of URI Scheme Sanitization in makeTagSafe via Case-Sensitivity

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...

CVE-2026-31873 Unhead has a Bypass of URI Scheme Sanitization in makeTagSafe via Case-Sensitivity

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...

CVE-2026-31873

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...

CVE-2026-31873

Unhead suffers a bypass of URI scheme sanitization in makeTagSafe prior to version 2.1.11: the code checks href values with String.includes(), which is case-sensitive. Since browsers treat URI schemes case-insensitively, inputs like DATA:text/css,... can evade the check and allow arbitrary CSS vi...

CVE-2026-31860

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered...

CVE-2026-31860 Unhead has a XSS bypass in `useHeadSafe` via attribute name injection and case-sensitive protocol check

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered tags. This is the composable that Nuxt docs recommend for safely handling user-generated content. The acceptDataAttrs...

CVE-2026-31860 Unhead has a XSS bypass in `useHeadSafe` via attribute name injection and case-sensitive protocol check

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered tags. This is the composable that Nuxt docs recommend for safely handling user-generated content. The acceptDataAttrs...

CVE-2026-31860 Unhead has a XSS bypass in `useHeadSafe` via attribute name injection and case-sensitive protocol check

Unhead is a document head and template manager. Prior to 2.1.11, useHeadSafe can be bypassed to inject arbitrary HTML attributes, including event handlers, into SSR-rendered tags. This is the composable that Nuxt docs recommend for safely handling user-generated content. The acceptDataAttrs...

GHSA-5339-HVWR-7582 Unhead Vulnerable to Bypass of URI Scheme Sanitization in makeTagSafe via Case-Sensitivity

The link.href check in makeTagSafe safe.ts, line 68-71 uses String.includes, which is case-sensitive: typescript if key === 'href' if val.includes'javascript:' || val.includes'data:' return nextkey = val Browsers treat URI schemes case-insensitively. DATA:text/css,... is the same as...

EUVD-2026-11640

Unhead Vulnerable to Bypass of URI Scheme Sanitization in makeTagSafe via Case-Sensitivity...

@saasmakers/ui (>=0.1.88, <=1.4.50), @styleframe/docs (>=1.1.0, <=2.0.1) +12 more potentially affected by CVE-2026-31873 via unhead (>=2.0.0, <=2.1.10)

unhead NPM version =2.0.0, =0.1.88, =1.1.0, =2.0.0-alpha.19, =2.0.0-alpha.9, =2.0.0-alpha.0, =2.0.0-alpha.18, =2.0.0-alpha.17, =2.0.0-alpha.0, =1.2.0, =0.0.2, =0.17.0, =2.0.0-alpha.8, =0.1.0-beta.10, =0.1.0-beta.14 Source cves: CVE-2026-31873 Source advisory: OSV:GHSA-5339-HVWR-7582...

@saasmakers/ui (>=0.1.88, <=1.4.50), @styleframe/docs (>=1.1.0, <=2.0.1) +12 more potentially affected by CVE-2026-31860 via unhead (>=2.0.0, <=2.1.10)

unhead NPM version =2.0.0, =0.1.88, =1.1.0, =2.0.0-alpha.19, =2.0.0-alpha.9, =2.0.0-alpha.0, =2.0.0-alpha.18, =2.0.0-alpha.17, =2.0.0-alpha.0, =1.2.0, =0.0.2, =0.17.0, =2.0.0-alpha.8, =0.1.0-beta.10, =0.1.0-beta.14 Source cves: CVE-2026-31860 Source advisory: SNYK:JS-UNHEAD-15627227...

Cross-site Scripting (XSS)

Overview unhead is a Full-stack manager built for any framework. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the acceptDataAttrs function, which allows attribute names containing spaces or illegal characters to be injected into SSR-rendered HTML tags. An...

Cross-site Scripting (XSS)

Overview org.webjars.npm:unhead is a Full-stack manager built for any framework. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the acceptDataAttrs function, which allows attribute names containing spaces or illegal characters to be injected into SSR-rendered HTM...

EUVD-2026-11639

Unhead has XSS bypass in useHeadSafe via attribute name injection and case-sensitive protocol check...

org.webjars.npm:unhead__vue (>=1.11.20, <=2.1.10), org.webjars.npm:vueuse__head (1.0.22) potentially affected by CVE-2026-31860 via org.webjars.npm:unhead (>=1.11.20, <=2.1.10)

org.webjars.npm:unhead MAVEN version =1.11.20, =1.11.20, =2.1.10 - org.webjars.npm:vueusehead 1.0.22 Source cves: CVE-2026-31860 Source advisory: SNYK:JAVA-ORGWEBJARSNPM-15627228...