---
id: "CVE-2026-107256"
kind: "vulnerability"
aliases: ["CVE-2026-107256"]
title: "Drupal Shield: missing limit on login attempts allows brute-force guessing"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["drupal", "package", "self-hosted", "shield"]
not_affected_if: ["shield-not-installed"]
published_at: "2026-10-30T04:17:52+00:00"
first_seen_at: "2026-10-30T04:28:35+00:00"
updated_at: "2026-10-30T04:31:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107256", "first_seen_at": "2026-10-30T04:28:35+00:00"}]
---

# Drupal Shield: missing limit on login attempts allows brute-force guessing

The Drupal Shield module does not restrict excessive authentication attempts, so an attacker can repeatedly guess passwords. Successful guessing would give access to the affected Drupal site's accounts.

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

## How to check

- Check the installed Shield version (for example with `drush pm:list --filter=shield` or in the Drupal admin Extend page) and see whether it is `1.9.0` or earlier.

## Fix

- Shield versions up to and including `1.9.0` are affected; the sources do not state a fixed version.

## Timeline

- 2026-10-30T04:28:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107256

## From the sources

Improper Restriction of Excessive Authentication Attempts vulnerability in Drupal Shield allows Brute Force. This issue affects Shield versions: from 0.0.0 to 1.9.0.

---

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