CVE-2026-27901

MEDIUM
2026-02-26 [email protected] GHSA-phwv-c562-gvmh
6.1
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
Patch Released
Mar 05, 2026 - 14:49 nvd
Patch available
CVE Published
Feb 26, 2026 - 02:16 nvd
MEDIUM 6.1

Tags

XSS Svelte Redhat

Description

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 on the server. Version 5.53.5 fixes the issue.

Analysis

Svelte versions prior to 5.53.5 fail to properly escape text bindings on contenteditable elements, allowing attackers to inject malicious HTML and execute arbitrary scripts when the application renders untrusted data as initial binding values during server-side rendering. This affects applications that use `bind:innerText` or `bind:textContent` with user-controlled input. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +30
POC: 0

Vendor Status

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CVE-2026-27901 vulnerability details – vuln.today
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