CVE-2026-90939 novel-plus through 5.3.3 Missing Authorization on the Admin /sys/user/list Endpoint
Authenticated attackers can access the admin user list endpoint to retrieve password hashes and personal data, enabling offline cracking and account takeover.
- 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-2026-90939?
CVE-2026-90939 is a high-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 information disclosure vulnerability in the /sys/user/list endpoint that lacks proper permission annotations. Authenticated attackers can retrieve password hashes and personal data including email addresses and phone numbers for users within their data scope, enabling offline hash cracking and account takeover.
Weakness: CWE-862
Which versions are affected by CVE-2026-90939?
How do I fix CVE-2026-90939?
No fix has been published for CVE-2026-90939 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-2026-90939 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90939 exists.
Sources
Also known as GHSA-m7g4-qv3h-g3h9.