CVE-2026-23839 Movary vulnerable to Cross-site Scripting with `?categoryUpdated=` param

What is CVE-2026-23839?

CVE-2026-23839 is a critical cross-site scripting vulnerability in leepeuker movary, published on 19 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Movary is a web application to track, rate and explore your movie watch history. Due to insufficient input validation, attackers can trigger cross-site scripting payloads in versions prior to 0.70.0. The vulnerable parameter is `?categoryUpdated=`. Version 0.70.0 fixes the issue.

Weakness: CWE-79, CWE-20

Which versions are affected by CVE-2026-23839?

It affects 1 product.

Products include Leepeuker Movary.

How do I fix CVE-2026-23839?

No fix has been published for CVE-2026-23839 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-23839 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23839 exists.

Other vulnerabilities in leepeuker movary

• 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-2026-40349 Authenticated Movary User Can Self-Escalate to Administrator via PUT /settings/users/{userId} by Setting isAdmin=true High 8.8
• 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-v32w-5qx7-p3vq.