Unauthorized Access in Oppia's AdminRoleHandler Endpoint
CVE-2026-85210

5.3MEDIUM

Key Information:

Vendor

Oppia

Status
Oppia
Vendor
CVE Published:
3 September 2026

What is CVE-2026-85210?

The AdminRoleHandler GET endpoint in Oppia is exposed with insufficient authorization controls, allowing any registered user to access sensitive information. Attackers can exploit this vulnerability by manipulating the filter_criterion parameters to list usernames associated with specific roles and obtain additional details such as banned status and managed topics, thereby compromising the security of privileged accounts.

Affected Version(s)

oppia 0 <= 3.5.2

References

https://github.com/oppia/oppia/issues/26652
issue-tracking
https://github.com/oppia/oppia
product
https://github.com/oppia/oppia/blob/v3.5.2/core/controlle...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.