Vulnerability · Published Sep 3, 2026 · Assigned by VulnCheck

CVE-2026-85210Oppia through 3.5.2 Missing Authorization on AdminRoleHandler GET

Medium 4.3

In plain English

A medium-severity missing authorization in oppia from oppia. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
oppia	oppia	0 – through 3.5.2

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

GitHub Issue #26652 issue-tracking
https://github.com/oppia/oppia product
core/controllers/admin.py at v3.5.2 technical-description
VulnCheck Advisory: Oppia through 3.5.2 Missing Authorization on AdminRoleHandler GET third-party-advisory