How severe is CVE-2017-6926?

CVE-2017-6926 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2017-6926 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6926?

CVE-2017-6926 affects Drupal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-6926?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-6926 published?

CVE-2017-6926 was published on 2018-03-01 and last updated on 2026-06-17.

CVE-2017-6926

CVE-2017-6926 is a high-severity vulnerability in Drupal with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Drupal
Published: 2018-03-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2017-6926?: 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.
How severe is CVE-2017-6926?: CVE-2017-6926 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2017-6926 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6926?: CVE-2017-6926 affects Drupal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-6926?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-6926 published?: CVE-2017-6926 was published on 2018-03-01 and last updated on 2026-06-17.

References

https://www.drupal.org/sa-core-2018-001

Affected products (1)

cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*

More vulnerabilities in Drupal

CVE-2009-3352 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in the quota_by_role (Quota by role) module for Drupal have unknown impact and…
CVE-2026-9082 — Critical (CVSS 9.8): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Drupal Drupal…
CVE-2024-55638 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2024-55637 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2024-55636 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2020-13675 — Critical (CVSS 9.8): Drupal's JSON:API and REST/File modules allow file uploads through their HTTP APIs. The modules do not correctly run…

All CVEs affecting Drupal →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →