Security readout for executives and security teams
Plain-English summary
This Drupal Core issue could let someone view content before the site owner intended it to be public. The exposure is limited to sites using the experimental Workspaces module and affected Drupal 8.8, 8.9, or 9.0 releases.
Executive priority
Treat this as a targeted content-confidentiality issue. It is not known to be exploited, but affected publishing workflows should be patched promptly because pre-release or sensitive content may become visible early.
Technical view
The Workspaces module did not sufficiently check permissions when switching workspaces, creating an access bypass. Affected versions are Drupal Core 8.8.x before 8.8.10, 8.9.x before 8.9.6, and 9.0.x before 9.0.6.
Likely exposure
Exposure is likely limited to Drupal sites running affected core versions with the experimental Workspaces module installed. Sites not using Workspaces are described as not vulnerable in the source bundle.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked as KEV. Impact is unauthorized viewing of not-yet-public content, not confirmed code execution or system takeover.
Researcher notes
Focus validation on permission checks around workspace switching and content visibility boundaries. Evidence does not include CVSS, exploit details, or broad product impact beyond Drupal Core with Workspaces.
Mitigation direction
- Upgrade Drupal Core to 8.8.10, 8.9.6, 9.0.6, or a later supported fixed release.
- Check Drupal advisory SA-CORE-2020-008 for vendor-specific update instructions.
- Prioritize sites using the experimental Workspaces module.
- If upgrades are delayed, follow Drupal guidance before changing Workspaces usage.
Validation and detection
- Inventory Drupal Core versions across public and internal sites.
- Confirm whether the experimental Workspaces module is installed or enabled.
- Verify affected sites are updated beyond the vulnerable version ranges.
- Review unpublished or staged content for unintended exposure risk.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-13667 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.drupal.org/sa-core-2020-008CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.