---
id: "CVE-2026-84915"
kind: "vulnerability"
aliases: ["CVE-2026-84915"]
title: "Drupal Component blocks: stored XSS in versions up to 1.2.7"
severity: "medium"
cvss: 4.6
epss: 0.00162
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["drupal", "other", "self-hosted"]
not_affected_if: ["module-not-installed"]
published_at: "2026-10-22T02:17:01+00:00"
first_seen_at: "2026-10-23T21:57:30+00:00"
updated_at: "2026-10-25T04:35:30+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84915", "first_seen_at": "2026-10-23T21:57:30+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-84915", "first_seen_at": "2026-10-24T07:15:52+00:00"}]
---

# Drupal Component blocks: stored XSS in versions up to 1.2.7

The Drupal Component blocks module has a stored cross-site scripting flaw in versions 0.0.0 through 1.2.7. An attacker who can store content that renders through these blocks can run script in other users' browsers.

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

## How to check

- Check the installed Component blocks module version with `drush pm:list --filter=components` or the Drupal extend page
- unknown

## Fix

- Upgrade Drupal Component blocks to a version later than `1.2.7`, as listed in the advisory
- unknown

## Timeline

- 2026-10-23T21:57:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84915
- 2026-10-24T07:15:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-84915

## From the sources

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.

---

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