obot before v0.21.1 Authorization Bypass via /mcp-connect (CVE-2026-101084) | HOL Guard CVE

Critical · CVSS 9.3CVE-2026-101084

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

Answer in brief

CVE-2026-101084 records a Critical severity (CVSS 9.3) vulnerability in obot before v0.21.1 Authorization Bypass via /mcp-connect. The current sources do not mark it as known exploited. The current feed maps obot-platform/obot (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 27, 2026Updated Sep 27, 2026Source checked Sep 27, 2026First seen by HOL Sep 27, 2026Material review Sep 27, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps obot-platform/obot (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
obot-platform/obotgeneric	>=0 <0.21.1	0.21.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for obot-platform/obot.
Review the reported fix. Update obot-platform/obot to 0.21.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 27, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.