CVE-2026-9354

MediumCVSS 6.5/10Last modified Jul 23, 2026

Description

A vulnerability was detected in NousResearch hermes-agent up to 2026.4.16. The affected element is an unknown function of the component Slack Agent/Mattermost Agent. The manipulation of the argument format_message results in escaping of output. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-74CWE-116

Affected software

No affected versions have been published.

Timeline

Published
May 24, 2026
Last modified
Jul 23, 2026
NVD status
Deferred

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