PT-2026-42912 · Nousresearch · Hermes-Agent

Eric-I · Published 2026-05-24 · Updated 2026-05-24 · CVE-2026-9354

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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.

Exploit

Improper Encoding or Escaping of Output

Special Elements Injection

Weakness Enumeration

CWE-116

CWE-74

Related Identifiers

CVE-2026-9354

Affected Products

Hermes-Agent

References · 4

• 🔥 https://gist.github.com/YLChen-007/e90fb38ac03284176bae49898a3a46a4 · Exploit
• https://vuldb.com/vuln/365317/cti · Note
• https://vuldb.com/vuln/365317 · Note
• https://vuldb.com/submit/812226 · Note