GHSA-QGVG-PR8V-6RR3 Svelte: XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError...

Svelte: XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError...

@lapidist/design-lint (>=6.1.0, <=7.0.1), @markuplint/svelte-parser (>=5.0.0-alpha.0, <=5.0.0-alpha.2) +2 more potentially affected by CVE-2026-27902 via svelte (>=5.53.0, <=5.53.3)

svelte NPM version =5.53.0, =6.1.0, =5.0.0-alpha.0, =5.0.0-alpha.2 - @networkpro/web 1.26.10 - dumbo-svelte 0.3.1 Source cves: CVE-2026-27902 Source advisory: OSV:GHSA-QGVG-PR8V-6RR3...

@budibase/server (>=3.32.1, <=3.38.1), @builders-of-stuff/svelte-sui-wallet-adapter (>=0.6.6, <=2.1.0) +52 more potentially affected by CVE-2026-27901 via svelte (>=5.0.0, <=5.53.3)

svelte NPM version =5.0.0, =3.32.1, =0.6.6, =4.0.0-alpha.1, =4.0.0-alpha.1, =0.1.0, =0.0.1, =1.3.0, =0.1.4, =0.0.20, =0.15.0-beta.2, =1.1.0-beta.0, =5.0.0-next.80, =0.1.1-alpha.24, =0.1.3-next.2 and more Source cves: CVE-2026-27901 Source advisory: OSV:GHSA-PHWV-C562-GVMH...

EUVD-2026-8799

Svelte vulnerable to XSS during SSR with contenteditable bind:innerText and bind:textContent...

GHSA-PHWV-C562-GVMH Svelte vulnerable to XSS during SSR with contenteditable `bind:innerText` and `bind:textContent`

The contents of bind:innerText and bind:textContent on contenteditable elements were not properly escaped. This could enable HTML injection and Cross-site Scripting XSS if rendering untrusted data as the binding's initial value on the server...

Svelte vulnerable to XSS during SSR with contenteditable `bind:innerText` and `bind:textContent`

The contents of bind:innerText and bind:textContent on contenteditable elements were not properly escaped. This could enable HTML injection and Cross-site Scripting XSS if rendering untrusted data as the binding's initial value on the server...

CVE-2026-27902

A cross-site scripting XSS vulnerability was found in Svelte’s server-side rendering SSR error handling. Error messages returned from the transformError function were not properly escaped before being embedded into HTML output within hydration markers. If an application returns attacker-controlle...

Cross-site Scripting (XSS)

Overview svelte is a package for building web applications. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the bind:innerText and bind:textContent bindings on contenteditable elements during server-side rendering. An attacker can execute arbitrary scripts in the...

@budibase/server (>=3.32.1, <=3.38.1), @builders-of-stuff/svelte-sui-wallet-adapter (>=0.6.6, <=2.1.0) +52 more potentially affected by CVE-2026-27901 via svelte (>=5.0.0, <=5.53.3)

svelte NPM version =5.0.0, =3.32.1, =0.6.6, =4.0.0-alpha.1, =4.0.0-alpha.1, =0.1.0, =0.0.1, =1.3.0, =0.1.4, =0.0.20, =0.15.0-beta.2, =1.1.0-beta.0, =5.0.0-next.80, =0.1.1-alpha.24, =0.1.3-next.2 and more Source cves: CVE-2026-27901 Source advisory: SNYK:JS-SVELTE-15353449...

Cross-site Scripting (XSS)

Overview org.webjars.npm:svelte is a package for building web applications. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the bind:innerText and bind:textContent bindings on contenteditable elements during server-side rendering. An attacker can execute arbitrary...

@lapidist/design-lint (>=6.1.0, <=7.0.1), @markuplint/svelte-parser (>=5.0.0-alpha.0, <=5.0.0-alpha.2) +2 more potentially affected by CVE-2026-27902 via svelte (>=5.53.0, <=5.53.3)

svelte NPM version =5.53.0, =6.1.0, =5.0.0-alpha.0, =5.0.0-alpha.2 - @networkpro/web 1.26.10 - dumbo-svelte 0.3.1 Source cves: CVE-2026-27902 Source advisory: SNYK:JS-SVELTE-15353447...

Cross-site Scripting (XSS)

Overview svelte is a package for building web applications. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the transformError function. An attacker can execute arbitrary scripts in the context of the affected application by injecting malicious content that is not...

CVE-2026-27902

Svelte performance oriented web framework. Prior to version 5.53.5, errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError. Version 5.53.5 fixes the...

CVE-2026-27901

Svelte performance oriented web framework. Prior to version 5.53.5, the contents of bind:innerText and bind:textContent on contenteditable elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting XSS if rendering untrusted data as the binding's initial value o...

CVE-2026-27902 Svelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Svelte performance oriented web framework. Prior to version 5.53.5, errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError. Version 5.53.5 fixes the...

CVE-2026-27902 Svelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Svelte performance oriented web framework. Prior to version 5.53.5, errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError. Version 5.53.5 fixes the...

CVE-2026-27902

Svelte prior to version 5.53.5 is vulnerable to HTML injection and XSS in SSR error boundary hydration markers, caused by transformError not being properly escaped before HTML output. Attacker-controlled content returned from transformError could be embedded in the page. The issue is fixed in 5.5...

CVE-2026-27902 Svelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Svelte performance oriented web framework. Prior to version 5.53.5, errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError. Version 5.53.5 fixes the...

CVE-2026-27902

Svelte performance oriented web framework. Prior to version 5.53.5, errors from transformError were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from transformError. Version 5.53.5 fixes the...