What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-04 · updated 2026-10-25
• Weakness: CWE-404

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.

Affected products

• NousResearch hermes-agent: 2026.4.0, 2026.4.1, 2026.4.2, 2026.4.3, 2026.4.4, 2026.4.5 (+25)

References

• https://gist.github.com/YLChen-007/b91a85f9448beadebe25d37a3f4fd760
• https://vuldb.com/cve/CVE-2026-14626
• https://vuldb.com/submit/845596
• https://vuldb.com/vuln/376142
• https://vuldb.com/vuln/376142/cti

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