CVE-2026-64870 MaxKB: UpdateStoreTool fetches caller-supplied app-store URLs without host validation
Authenticated users can force the MaxKB server to request internal or cloud metadata URLs via unvalidated store update tools.
- 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-2026-64870?
CVE-2026-64870 is a medium-severity server-side request forgery vulnerability in 1Panel-dev MaxKB, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
MaxKB is an open-source AI assistant for enterprise. In versions 2.0.0 through 2.10.4-lts, UpdateStoreTool.update_tool passes caller-supplied download_url and download_callback_url values to requests.get without equivalent trusted-host and redirect validation, allowing an authenticated workspace user to make the server request internal, loopback, link-local, or cloud metadata URLs. A fix is present on the v2 branch but has not yet been included in a published release.
Weakness: CWE-918
Which versions are affected by CVE-2026-64870?
How do I fix CVE-2026-64870?
No fix has been published for CVE-2026-64870 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-64870 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-64870 exists.
Sources
Also known as GHSA-7xxm-gqxv-ph3v.