Security Digest · Vulnerability record
CVE-2019-6342: Drupal Improper Access Control
An access bypass vulnerability exists when the experimental Workspaces module in Drupal 8 core is enabled.
CVSS 9.8 Critical EPSS 2.2% · p82
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 2.2%, percentile 82: FIRST’s model estimates a 2.2% chance of exploitation activity in the next 30 days, higher than 82% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
drupal/core(Composer (PHP)) > 8.7.3, < 8.7.5, fixed in 8.7.5;drupal/drupal(Composer (PHP)) > 8.7.3, < 8.7.5, fixed in 8.7.5. Check your lockfile, including transitive dependencies.
What it is
An access bypass vulnerability exists when the experimental Workspaces module in Drupal 8 core is enabled. This can be mitigated by disabling the Workspaces module. It does not affect any release other than Drupal 8.7.4.
From the GitHub advisory
An access bypass vulnerability exists when the experimental Workspaces module in Drupal 8 core is enabled. This can be mitigated by disabling the Workspaces module. It does not affect any release other than Drupal 8.7.4.
Weakness type: CWE-284.
Product: drupal/core (Composer (PHP)) · Assigned by: drupal · Published: 2020-05-28
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | drupal/core | > 8.7.3, < 8.7.5 | 8.7.5 |
| Composer (PHP) | drupal/drupal | > 8.7.3, < 8.7.5 | 8.7.5 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Drupal | Drupal Core | Drupal 8 8.7.4 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 2.20% probability of exploitation activity in the next 30 days; percentile 82.
Timeline
- — CVE record published by drupal
- — GitHub-reviewed advisory GHSA-xq62-62c9-22mg published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-xq62-62c9-22mg github.com
- CVE.org record CVE-2019-6342 cve.org
- NVD entry CVE-2019-6342 nvd.nist.gov
Other references from the CVE record and advisory
- drupal.org drupal.org
- github.com github.com
- github.com github.com
- github.com github.com
Critical Composer (PHP) advisories · Today’s Security Digest