CVE-2026-85210

Summary

Oppia's AdminRoleHandler GET endpoint in core/controllers/admin.py is decorated with open_access, allowing any registered user to enumerate privileged accounts and roles. Attackers can query the endpoint with filter_criterion parameters to retrieve usernames holding specific roles, banned flags, and managed topic identifiers without authorization.

Affected Software

Weaknesses

• CWE-862: Missing Authorization

References

• https://github.com/oppia/oppia/issues/26652
• https://github.com/oppia/oppia
• https://github.com/oppia/oppia/blob/v3.5.2/core/controllers/admin.py
• https://www.vulncheck.com/advisories/oppia-through-3.5.2-missing-authorization-on-adminrolehandler-get

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