Read the docs
TI-2026-69119 Aliases CVE-2026-105139

Authorization bypass in Obot vMCP profiles exposes prompts and resources

Priority LOW 24CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Obot from 0.26.0 before 0.26.2 contains an authorization bypass in its vMCP profiles. Authenticated users matching any vMCP profile can reach prompts and resources of components they were not granted, because profiles were enforced only on tools (CWE-863). Attackers can reach prompts, resources, and resource templates through the vMCP owner's shared component connection, which requires only low privileges over the network.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Fix Fixed obot (obot-platform): 0.26.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
obot-platformobot0.26.0 to before 0.26.20.26.2Patch availableCNA
  • obot Vendorobot-platform Affected 0.26.0 to before 0.26.2 Fixed in 0.26.2 Patch available CNA

Remediation

Upgrade Obot to 0.26.2, the fixed version. Versions from 0.26.0 before 0.26.2 are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA obot (obot-platform) Fixed in 0.26.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    obot-platform obot 0.26.2

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-69118 Credential exposure via MCP catalog entry API in ObotPriority LOW 31
    Show all 2 records →

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-105139
  2. 2026-10-07 CISA SSVC decision points changed

References

Patch 1

Advisory 1

Other 4

  • TI-2026-65117 obot before v0.21.1 Authorization Bypass via /mcp-connect CVSS 4.0CRITICAL 9.3
  • TI-2026-65098 Obot Quickstart Docker Deployment Unauthenticated Admin Access CVSS 4.0CRITICAL 9.3
  • TI-2026-65095 Obot before v0.23.0 Authentication Bypass via OAuth Dynamic Client Registration CVSS 4.0HIGH 8.7
  • TI-2026-65757 Obot 0.21.1 through 0.24.1 Authorization Bypass via /mcp-connect-composite/ Route CVSS 4.0HIGH 8.6
  • TI-2026-79161 Authentication bypass in Obot CLI login exposes API keys CVSS 4.0HIGH 8.6
  • TI-2026-65097 Obot before v0.23.0 Server-Side Request Forgery via MCP CVSS 4.0HIGH 8.3
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences