Critical severity · published Sep 27, 2026
CVE-2026-101084
obot before v0.21.1 Authorization Bypass via /mcp-connect
9.6
CVSS
0.3%
EPSS
No
On KEV
Description
obot versions before v0.21.1 fail to enforce Access Control Rules on the /mcp-connect endpoint, allowing any authenticated user to connect to restricted MCP servers if they possess the server ID. Attackers can bypass authorization checks to access and manipulate sensitive backend systems through MCP tool calls using stored OAuth credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OB
obot · obot-platform
before 0.21.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101084
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101084
vendor-advisory
https://github.com/obot-platform/obot/security/advisories/GHSA-vw82-7fv8-r6gp
third-party-advisory
https://www.vulncheck.com/advisories/obot-before-0.21.1-authorization-bypass-via-mcp-connect
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