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CVE-2026-14626— NousResearch hermes-agent HTTP API run_agent.py AIAgent.run_conversation denial of service

Quick assessment

Affected
NousResearch hermes-agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nous Research Hermes Agent是Nous Research团队开源的一款具备自我学习循环的AI代理工具。 Nous Research Hermes Agent存在资源管理错误漏洞，该漏洞源于HTTP API组件中run_agent.py文件的AIAgent.run_conversation函数对参数todos的操作，可能导致拒绝服务。以下版本受到影响：2026.4.0版本、2026.4.1版本、2026.4.2版本、2026.4.3版本、2026.4.4版本、2026.4.5版本、2

CVSS 4.3 · Medium EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 31

VendorProduct Version RangeStatus
NousResearch hermes-agent 2026.4.0 affected
2026.4.1 affected
2026.4.2 affected
2026.4.3 affected
2026.4.4 affected
2026.4.5 affected
2026.4.6 affected
2026.4.7 affected
… +23 more rows
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I. Basic Information for CVE-2026-14626

Vulnerability Information
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Vulnerability Title
NousResearch hermes-agent HTTP API run_agent.py AIAgent.run_conversation denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in NousResearch hermes-agent up to 2026.4.30. The impacted element is the function AIAgent.run_conversation of the file run_agent.py of the component HTTP API. This manipulation of the argument todos causes denial of service. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5
Vulnerability Title
Nous Research Hermes Agent 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nous Research Hermes Agent是Nous Research团队开源的一款具备自我学习循环的AI代理工具。 Nous Research Hermes Agent存在资源管理错误漏洞，该漏洞源于HTTP API组件中run_agent.py文件的AIAgent.run_conversation函数对参数todos的操作，可能导致拒绝服务。以下版本受到影响：2026.4.0版本、2026.4.1版本、2026.4.2版本、2026.4.3版本、2026.4.4版本、2026.4.5版本、2
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NousResearch hermes-agent 2026.4.0 cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-14626

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III. Intelligence Information for CVE-2026-14626

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Proof of Concept for CVE-2026-14626 (1)

Same Patch Batch · NousResearch · 2026-07-04 · 4 CVEs total

CVE-2026-14625 6.3 MEDIUM NousResearch hermes-agent server.py shell.exec protection mechanism
CVE-2026-14627 5.6 MEDIUM NousResearch hermes-agent Discord Platform Integration discord.py DiscordAdapter._is_allow
CVE-2026-14628 5.3 MEDIUM NousResearch hermes-agent Live Webhook Endpoint base.py extract_media path traversal

IV. Related Vulnerabilities

Same product: hermes-agent
Same vendor: NousResearch
Same weakness: CWE-404

V. Comments for CVE-2026-14626

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