CVE-2026-10221 MEDIUM

CVE-2026-10221: NousResearch hermes-agent run_agent.py _compress_context injection

Vendor Nousresearch
Product hermes-agent
Weakness CWE-74
Published June 1, 2026
Last update June 3, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 3, 2026 Record updated