---
id: "CVE-2026-108514"
kind: "vulnerability"
aliases: ["CVE-2026-108514"]
title: "Drupal core: cross-site scripting flaw lets attackers run scripts in pages"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["drupal", "php", "runtime", "self-hosted"]
not_affected_if: ["unknown"]
published_at: "2026-10-30T04:18:05+00:00"
first_seen_at: "2026-10-30T04:28:36+00:00"
updated_at: "2026-10-30T04:31:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108514", "first_seen_at": "2026-10-30T04:28:36+00:00"}]
---

# Drupal core: cross-site scripting flaw lets attackers run scripts in pages

Drupal core versions 10.3.0 through 10.6.19, 11.0.0 through 11.3.19, 11.4.0 through 11.4.10, and 12.0.0-alpha1 through 12.0.0-beta2 contain a cross-site scripting flaw. An attacker can inject script into web pages that a visitor's browser then runs.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Drupal core version with `vendor/bin/drush status drupal-version` or by reading `core/lib/Drupal.php`.
- Compare the version against the affected ranges: `10.3.0` to `10.6.19`, `11.0.0` to `11.3.19`, `11.4.0` to `11.4.10`, `12.0.0-alpha1` to `12.0.0-beta2`.

## Fix

- Move to a Drupal core version outside the affected ranges; the specific fixed versions are unknown from the sources.

## Timeline

- 2026-10-30T04:28:36+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-108514

## From the sources

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 10.3.0 to 10.6.19, from 11.0.0 to 11.3.19, from 11.4.0 to 11.4.10, from 12.0.0-alpha1 to 12.0.0-beta2.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_