CVE-2026-84715 FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update
Authenticated subusers can escalate privileges to full server control by modifying their own permission records due to missing validation.
- 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-2026-84715?
CVE-2026-84715 is a high-severity vulnerability in MythicalLTD FeatherPanel, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FeatherPanel versions before 1.3.7.10 fail to validate permissions in the SubuserController updateSubuser handler, allowing authenticated subusers to modify their own permission records. A subuser with minimal permissions can send a crafted request to grant themselves full server control, enabling unauthorized access to sensitive data, backups, and server configuration.
Weakness: CWE-862
Which versions are affected by CVE-2026-84715?
How do I fix CVE-2026-84715?
No fix has been published for CVE-2026-84715 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-84715 being exploited?
There is no known exploitation of CVE-2026-84715 in the wild and no public exploit code.
Sources
Also known as GHSA-2cvx-7j4v-8m5g.