Home

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.

PUBLISHED Reserved 2026-07-03 | Published 2026-07-04 | Updated 2026-07-07 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Denial of Service

Product status

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

2026.4.8
affected

2026.4.9
affected

2026.4.10
affected

2026.4.11
affected

2026.4.12
affected

2026.4.13
affected

2026.4.14
affected

2026.4.15
affected

2026.4.16
affected

2026.4.17
affected

2026.4.18
affected

2026.4.19
affected

2026.4.20
affected

2026.4.21
affected

2026.4.22
affected

2026.4.23
affected

2026.4.24
affected

2026.4.25
affected

2026.4.26
affected

2026.4.27
affected

2026.4.28
affected

2026.4.29
affected

2026.4.30
affected

Timeline

2026-07-03:Advisory disclosed
2026-07-03:VulDB entry created
2026-07-03:VulDB entry last update

Credits

Eric-a (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/376142 (VDB-376142 | NousResearch hermes-agent HTTP API run_agent.py AIAgent.run_conversation denial of service) vdb-entry technical-description

vuldb.com/vuln/376142/cti (VDB-376142 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-14626 (CVE-2026-14626 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/845596 (Submit #845596 | NousResearch Hermes Agent <= v2026.4.30 Insufficient Verification of Data Authenticity (CWE-345)) third-party-advisory

gist.github.com/YLChen-007/b91a85f9448beadebe25d37a3f4fd760 exploit

cve.org (CVE-2026-14626)

nvd.nist.gov (CVE-2026-14626)

Download JSON