by Kastro
Paper/Archive/CVE-2026-101084

CVE-2026-101084

obot-platform obot — obot before v0.21.1 Authorization Bypass via /mcp-connect

EPSS 0.3%public exploitCVSS 9.6
critical.is priorityof 100
44
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 28.1.281 × 205.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
obot< 0.21.10.21.1CNA

Scores by source

VulnCheck (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/obot-platform/obot/security/advisories/GHSA-vw82-7fv8-r6gpwriteupvulncheck.com/advisories/obot-before-0.21.1-authorization-bypass-via-mcp-connect