Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://gist.github.com/YLChen-007/e90fb38ac03284176bae49898a3a46a4
- https://vuldb.com/submit/812226
- https://vuldb.com/vuln/365317
- https://vuldb.com/vuln/365317/cti
FAQ
What is CVE-2026-9354?
CVE-2026-9354 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 f...
How severe is CVE-2026-9354?
CVE-2026-9354 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9354?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.