CVE-2026-105139 Obot 0.26.0 before 0.26.2 Authorization Bypass via vMCP Profile Prompts and Resources
Authenticated users can bypass authorization to access ungranted prompts and resources in Obot vMCP profiles.
- 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-2026-105139?
CVE-2026-105139 is a medium-severity missing authorization vulnerability in obot-platform obot, published on 7 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Obot 0.26.0 before 0.26.2 contains an authorization bypass vulnerability that allows authenticated users matching any vMCP profile to reach prompts and resources of ungranted components. Because profiles were enforced only on tools, attackers can access prompts, resources, and resource templates through the vMCP owner's shared component connection.
Weakness: CWE-863
Which versions are affected by CVE-2026-105139?
How do I fix CVE-2026-105139?
No fix has been published for CVE-2026-105139 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-2026-105139 being exploited?
There is no known exploitation of CVE-2026-105139 in the wild and no public exploit code.
Sources
Also known as GHSA-xhpw-65qw-wj6m.