CVE-2026-9353CWE-707CWE-74

NousResearch hermes-agent Skills Guard Multi-Word Prompt skills_guard.py injection

Medium · published May 24, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
43.1
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in NousResearch hermes-agent up to 2026.4.23. Impacted is an unknown function of the file agent/skills_guard.py of the component Skills Guard Multi-Word Prompt Handler. The manipulation of the argument THREAT_PATTERNS leads to injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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
EPSS
0.00516 · 43.1th percentile
Weaknesses
CWE-707 · Improper Neutralization; CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Published
2026-05-24T03:45Z
EPSS history
Timeline
  • 24 MAY 03:45Z
    NousResearch hermes-agent Skills Guard Multi-Word Prompt skills_guard.py injection
    cvelistv5