CVE-2026-54622 django-cms CVE debrief

Who should care

Defenders responsible for django CMS installations, especially those with staff users having global add permissions, should assess exposure and apply the patch. This includes reviewing and limiting staff user permissions to prevent unauthorized access and verifying the installed version of django CMS.

Why it matters

Defenders should prioritize verifying exposure and applying the patch, especially for staff users with global add permissions, as the vulnerability allows for potential data exposure.

• Staff users with global add permissions can read secret text, link names, and URLs from unauthorized pages or placeholders.
• The vulnerability allows for potential data exposure, requiring defenders to verify exposure and apply the patch.

Technical summary

The copy_plugins endpoint in cms/admin/placeholderadmin.py authorizes only the destination clipboard, allowing a staff user with the global add permission for a plugin type to copy plugins from an unauthorized page or placeholder into their clipboard and read secret text, link names, and URLs. This issue is fixed in version 5.0.8 of django CMS. The vulnerability arises from insufficient validation of the source placeholder, enabling potential data exposure. Defenders should prioritize verifying exposure and applying the patch.

Defensive priority

Defenders should prioritize verifying exposure and applying the patch, especially for staff users with global add permissions.

Recommended defensive actions

• Verify exposure by checking if the installed version of django CMS is prior to 5.0.8.
• Apply the patch by upgrading to django CMS version 5.0.8 or later.
• Review and limit staff user permissions to prevent unauthorized access.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its impact, and the fixed version. The vulnerability allows a staff user with the global add permission for a plugin type to copy plugins from an unauthorized page or placeholder into their clipboard and read secret text, link names, and URLs. Evidence is limited to public sources, and defenders should verify exposure and apply the patch. The fix is implemented in version 5.0.8 of django CMS.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.