CVE-2026-40349 Authenticated Movary User Can Self-Escalate to Administrator via PUT /settings/users/{userId} by Setting isAdmin=true

What is CVE-2026-40349?

CVE-2026-40349 is a high-severity vulnerability in leepeuker movary, published on 18 Apr 2026.

Official description

Movary is a self hosted web app to track and rate a user's watched movies. Prior to version 0.71.1, an ordinary authenticated user can escalate their own account to administrator by sending `isAdmin=true` to `PUT /settings/users/{userId}` for their own user ID. The endpoint is intended to let a user edit their own profile, but it updates the sensitive `isAdmin` field without any admin-only authorization check. Version 0.71.1 patches the issue.

Weakness: CWE-862

Which versions are affected by CVE-2026-40349?

It affects 1 product.

Products include Leepeuker Movary.

How do I fix CVE-2026-40349?

No fix has been published for CVE-2026-40349 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-40349 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40349 exists.

Other vulnerabilities in leepeuker movary

• CVE-2026-23839 Movary vulnerable to Cross-site Scripting with `?categoryUpdated=` param Critical 9.3
• CVE-2026-23840 Movary vulnerable to Cross-site Scripting with `?categoryDeleted=` param Critical 9.3
• CVE-2026-23841 Movary vulnerable to Cross-site Scripting with `?categoryCreated=` param Critical 9.3
• CVE-2026-40350 Missing authorization in movary High 8.8
• CVE-2026-40348 Movary has Authenticated SSRF via Jellyfin Server URL Verification that Allows Internal Network Probing High 7.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mcfq-8rx7-w25v.