Vulnerability Description
Incorrect Authorization vulnerability in ash-project ash authorizes an aggregate under one read action while computing it under another, so an aggregate can run with policies that do not match the action it was authorized against. Ash.Actions.Aggregate groups aggregates by their {authorize?, read_action} and authorizes each group under that read action, but when building the data query it selected the action as opts[:action] || read_action || <primary read> (lib/ash/actions/aggregate.ex). When a caller passed an :action option, the aggregate query ran under that action while authorization had been computed for the group's own read_action. If the run action's read policies are more permissive than the authorized one, the aggregate (a count or sum) is computed over records the authorized action's policies would have excluded, disclosing information about data the actor cannot read. The fix runs the aggregate under the same read_action it is authorized against. This issue affects ash: from 3.5.13 before 3.32.2.
Related Weaknesses (CWE)
References
- https://cna.erlef.org/cves/CVE-2026-82748.html
- https://github.com/ash-project/ash/commit/2d9b78b87d2dc72885a8aa1d660b478d42f749
- https://github.com/ash-project/ash/security/advisories/GHSA-g5hp-mghm-3mgp
- https://osv.dev/vulnerability/EEF-CVE-2026-82748
- https://github.com/ash-project/ash/security/advisories/GHSA-g5hp-mghm-3mgp
FAQ
What is CVE-2026-82748?
CVE-2026-82748 is a documented vulnerability. Incorrect Authorization vulnerability in ash-project ash authorizes an aggregate under one read action while computing it under another, so an aggregate can run with policies that do not match the act...
How severe is CVE-2026-82748?
CVSS scoring is not yet available for CVE-2026-82748. Check NVD for updates.
Is there a patch for CVE-2026-82748?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.