CVE-2026-46701Public exploitNetwork attack vector

Unauthenticated tool invocation via empty secret and CORS

Published Jul 20, 2026 · Updated Jul 20, 2026

Origin validation error in Network-AI before 5.4.5 allows remote attackers to invoke MCP tools through a malicious web page. The MCP SSE server supplies an empty default secret, treats a falsy secret as authorization, and adds a wildcard Access-Control-Allow-Origin header before dispatching JSON-RPC requests. Exploitation requires a user to visit attacker-controlled content while the default-configured localhost server is running, enabling reads and unauthorized changes to orchestrator state.

CVSS severity7.6
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Origin validation error in Network-AI before 5.4.5 allows remote attackers to invoke MCP tools through a malicious web page. The MCP SSE server supplies an empty default secret, treats a falsy secret as authorization, and adds a wildcard Access-Control-Allow-Origin header before dispatching JSON-RPC requests. Exploitation requires a user to visit attacker-controlled content while the default-configured localhost server is running, enabling reads and unauthorized changes to orchestrator state.

The record

CVE
CVE-2026-46701
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Jovancoding
Product
Network-AI
Classifications
CWE-346, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jovancoding · Network-AIversion=< 5.4.5

Published CVSS scores

7.6GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-346Origin Validation Error
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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