What’s Vulnerable › Vulnerabilities

CVE-2026-105139: Obot 0.26.0 before 0.26.2 Authorization Bypass via vMCP Profile Prompts and Resources

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-07 · updated 2026-10-07
• Weakness: CWE-863

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.

Affected products

• obot-platform obot: from 0.26.0 before 0.26.2 — fixed in 0.26.2

How to fix

Upgrade to a fixed version: obot-platform obot 0.26.2. Check the vendor advisory for mitigations.

References

• https://github.com/obot-platform/obot
• https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L231
• https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L97
• https://github.com/obot-platform/obot/commit/8d92701c2018a7b9dd6d692498fa5f41fdb912ea
• https://github.com/obot-platform/obot/releases/tag/v0.26.2
• https://github.com/obot-platform/obot/security/advisories/GHSA-xhpw-65qw-wj6m
• https://www.vulncheck.com/advisories/obot-0.26.0-before-0.26.2-authorization-bypass-via-vmcp-profile-prompts-and-resources

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