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Kong mcp-konnect EUVDEUVD-2026-41530

| CVE-2026-13341 HIGH
Improper Input Validation (CWE-20)
2026-07-03 Kong GHSA-6pr5-9p6v-xxrq
7.4
CVSS 3.1 · Vendor: Kong
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Plant malicious instructions in agent-readable data
  2. Delivery
    Agent ingests poisoned content via mcp-konnect
  3. Exploit
    Injected text interpreted as instructions
  4. Execution
    Agent issues unintended Konnect API requests
  5. Impact
    Sensitive data disclosed or resources manipulated

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions

Exploitation requires that an LLM/AI agent connected to the Kong mcp-konnect server (versions before 1.0.0) processes attacker-controlled content - this is the UI:R interaction in the CVSS vector: the injection is 'indirect,' so the attacker does not act directly but must get poisoned data into the agent's context (e.g., via a data source, API response, or resource the MCP server exposes). No authentication or special privileges are needed on the attacker's side (PR:N). Limiting factors: the attack only succeeds if an agent actually ingests the malicious content and is authorized to make Konnect API calls, and the blast radius is bounded by the permissions of the credentials the MCP server uses; deployments where agents only consume fully trusted data are not realistically exploitable.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N, base 7.4) indicates a network-reachable, low-complexity flaw needing no attacker privileges but requiring user/agent interaction (UI:R) - a victim agent must process the poisoned content for the injection to fire. The scope change (S:C) and C:H are the key drivers: injection in the model context crosses a trust boundary into the Konnect API authority and can disclose sensitive data. No EPSS score, KEV listing, or POC was provided, so there is no evidence of active or automated exploitation - this is a real but interaction-gated risk rather than a wormable, drive-by threat. One tension to verify: NVD scores I:N (no integrity impact), yet the description says the attacker can 'execute unintended API requests,' which implies at least some state-changing capability; the confidentiality-only scoring may understate integrity risk depending on which Konnect endpoints the agent can reach. Prioritize based on whether your MCP agents ingest untrusted external content.

Exploit ScenarioDerived

An attacker plants crafted instructions inside data that a Konnect-connected AI agent will later read - for example a resource name, description, or upstream API response the mcp-konnect server surfaces to the model. When the agent processes that content, the hidden directives are interpreted as commands, causing the agent to issue unintended Konnect API requests such as reading sensitive configuration or altering managed resources. No public exploit code is identified, but the low attack complexity means only a plausible content-injection foothold and a victim agent interaction are required.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 03, 2026

Indirect prompt injection in the Kong Konnect Model Context Protocol (MCP) server (konghq mcp-konnect) before version 1.0.0 allows a remote attacker to smuggle malicious instructions into content that an LLM agent processes, causing the agent to issue unintended Kong Konnect API requests. Because the injected instructions execute with the trust and credentials of the connected agent, an attacker can exfiltrate sensitive Konnect data or drive management API calls the operator never intended. No public exploit identified at time of analysis, but the CVSS 7.4 rating (scope-changed, confidentiality-high) reflects meaningful impact once an agent ingests attacker-controlled data.

RemediationAI

Vendor-released patch: 1.0.0 - upgrade the Kong mcp-konnect MCP server to version 1.0.0 or later, per Kong advisory GHSA-7767-3m3w-2p44 (https://github.com/Kong/mcp-konnect/security/advisories/GHSA-7767-3m3w-2p44). Until you can upgrade, reduce exposure by restricting the MCP server to trusted data sources so agents do not ingest attacker-controlled content (accepting reduced automation coverage), scoping the Konnect API credentials the server uses to least privilege and read-only where possible (which limits state-changing misuse but may break some agent workflows), and adding human-in-the-loop approval for any write or destructive Konnect operations the agent can trigger (which slows automation but blocks silent unintended requests). Monitor Konnect audit logs for anomalous API calls originating from the agent's service account.

Affected VersionsENISA

mcp-konnect 0 <1.0.0

Affected Packages

euvd mcp_konnect fix: 1.0.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is an MCP server (cpe:2.3:a:konghq:mcp-konnect), a bridge that exposes Kong Konnect API-management operations as tools an AI/LLM agent can invoke. MCP servers translate an agent's natural-language intent into concrete API calls, so any content the agent reads - API responses, resource descriptions, tool output - becomes part of the model's instruction context. The root cause is classified as CWE-20 (Improper Input Validation): the server does not adequately isolate or sanitize untrusted data before it reaches the model's decision loop, so attacker-planted text is interpreted as instructions ('indirect' prompt injection) rather than inert data. The Code Injection tag underscores that the injected directives are effectively executed as unintended API operations against the Konnect control plane.

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Severity by source

Vendor (Kong) PRIMARY 7.4 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
vuln.today AI 8.2 HIGH

Network-reachable indirect injection needs no privileges but requires an agent to ingest attacker content (UI:R); crossing into the Konnect API authority is S:C with C:H, and I:L reflects state-changing unintended API requests.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:L/SA:N

Primary rating from Vendor (Kong).

CVSS VectorVendor: Kong

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
Patch available
Jul 03, 2026 - 12:01 EUVD

DescriptionCVE.org

A vulnerability exists in the Kong Konnect Model Context Protocol (MCP) server prior to version 1.0.0, which could allow a remote attacker to perform an indirect prompt injection attack and execute unintended API requests.

Executive ViewAI

Why It Matters

Kong Konnect's Model Context Protocol server before version 1.0.0 is vulnerable to indirect prompt injection attacks that allow remote adversaries to manipulate API commands and access sensitive infrastructure data. Organizations using this platform risk unauthorized changes to Kong-managed configurations and exposure of credentials, directly compromising infrastructure security and compliance controls.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Isolate Kong Konnect MCP from untrusted data sources; (2) Implement mandatory input sanitization for all agent data ingestion; (3) Restrict API credentials to read-only or minimal scope permissions; (4) Enable real-time monitoring of Kong API calls for anomalous activity; (5) Implement network segmentation to contain impact of agent compromise.

Threat Intelligence Overview

EPSS Score
0.3%
Top 83% exploitable
Prevalence
Low
niche, newly emerging MCP integration for Kong Konnect users only
Social Media
3
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +37
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

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