CVE-2017-6926
Drupal Comment reply form allows access to restricted content
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
CVE-2017-6926- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
CVE-2017-6926- Updated
- 2026-11-02
EUVDEUVD-2022-2018 No score
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
EUVD-2022-2018- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2p28-5mvp-2j2r
Drupal Comment reply form allows access to restricted content
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
GHSA-2p28-5mvp-2j2r- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
CVE-2017-6926- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-2p28-5mvp-2j2r
Drupal Comment reply form allows access to restricted content
In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
- Record
GHSA-2p28-5mvp-2j2r- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/corePackagist |
8.4.0 up to 8.4.5 | 8.4.5 |
drupal/corePackagist |
7.0 up to 7.57 | 7.57 |
drupal/drupalPackagist |
8.4.0 up to 8.4.5 | 8.4.5 |
drupal/drupalPackagist |
7.0 up to 7.57 | 7.57 |
drupal/corePackagist |
8.4.0 up to 8.4.5, plus listed versions 8.4.18.4.28.4.38.4.4 |
8.4.5 |
drupal/drupalPackagist |
8.4.0 up to 8.4.5, plus listed versions 8.4.18.4.28.4.38.4.4 |
8.4.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-6926 is a high vulnerability (CVSS 8.1) in Drupal, published March 1, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.21%, the 68th percentile. Fixed in drupal/core 8.4.5.
References
drupal.org/sa-core-2018-001
nvd.nist.gov/vuln/detail/CVE-2017-6926
github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6926.yaml