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Not in CISA KEV
HIGH severity

CVE-2017-6919 — core

HIGH

CVE-2017-6919 is a high-severity (CVSS 7.5) vulnerability in drupal/core. A fix is available for drupal/core — see the affected versions and patch details below.

Drupal access control bypass vulnerability

Also known asGHSA-6hpj-9xj7-2jxx
Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs76th percentile — riskier than 76% of all scored CVEsHighest risk
0.10%0.77%1.44%2.11%0.6%1.6%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

4 pkgs affected
🐘drupal/core🐘drupal/core🐘drupal/drupal🐘drupal/drupal

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Drupal 8 before 8.2.8 and 8.3 before 8.3.1 allows critical access bypass by authenticated users if the RESTful Web Services (rest) module is enabled and the site allows PATCH requests.

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistdrupal/core≥ 8.0&&< 8.2.88.2.8composer require drupal/core:^8.2.8
🐘Packagistdrupal/core≥ 8.3.0&&< 8.3.18.3.1composer require drupal/core:^8.3.1
🐘Packagistdrupal/drupal≥ 8.0&&< 8.2.88.2.8composer require drupal/drupal:^8.2.8
🐘Packagistdrupal/drupal≥ 8.3.0&&< 8.3.18.3.1composer require drupal/drupal:^8.3.1

Affected Products

1 product · 71 configurations
Application
drupaldrupal
27 versions
8.0.08.0.18.0.28.0.38.0.48.0.58.0.68.1.08.1.18.1.28.1.38.1.4

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for drupal/core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update drupal/core to 8.2.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-6919 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Drupal 8 before 8.2.8 and 8.3 before 8.3.1 allows critical access bypass by authenticated users if the RESTful Web Services (rest) module is enabled and the site allows PATCH requests.
O3 Security · Impact-Aware SCA

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CVE-2017-6919: core — Fixed in 8.2.8