CVE-2026-105139CWE-863broken-access-control

CVE-2026-105139

Medium · published October 7, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
13.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00234 · 13.5th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-10-07T17:17Z
References (7)
https://github.com/obot-platform/obot · [email protected]https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L231 · [email protected]https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L97 · [email protected]https://github.com/obot-platform/obot/commit/8d92701c2018a7b9dd6d692498fa5f41fdb912ea · [email protected]https://github.com/obot-platform/obot/releases/tag/v0.26.2 · [email protected]https://github.com/obot-platform/obot/security/advisories/GHSA-xhpw-65qw-wj6m · [email protected]https://www.vulncheck.com/advisories/obot-0.26.0-before-0.26.2-authorization-bypass-via-vmcp-profile-prompts-and-resources · [email protected]
EPSS history
Timeline
  • 09 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 07 OCT 12:18Z
    Obot 0.26.0 before 0.26.2 Authorization Bypass via vMCP Profile Prompts and Resources
    cvelistv5