CVE-2026-90941 novel-plus through 5.3.3 Missing Authorization on the Admin Book Download Endpoint

Medium 5.3 Published Updated

Authenticated users can bypass VIP checks to download full book content, including paid chapters, via the admin download endpoint.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-90941?

CVE-2026-90941 is a medium-severity missing authorization vulnerability in 201206030 novel-plus, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

novel-plus through 5.3.3 contains an authorization bypass vulnerability in the BookController download endpoint that allows authenticated backend accounts to export complete book text including paid chapters. Attackers can supply a bookId and bookName to retrieve all chapter content without VIP or purchase verification, bypassing the permission checks and data-scope limits enforced elsewhere in the admin interface.

Weakness: CWE-862

Which versions are affected by CVE-2026-90941?

How do I fix CVE-2026-90941?

No fix has been published for CVE-2026-90941 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-90941 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90941 exists.

Sources

Also known as GHSA-39v2-xq6r-hppw.

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