High severity7.3NVD Advisory· Published May 24, 2026· Updated Jul 23, 2026
CVE-2026-9366
CVE-2026-9366
Description
A vulnerability was found in NousResearch hermes-agent 2026.4.23. The impacted element is the function _scan_context_content of the file agent/prompt_builder.py. The manipulation results in injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
hermes-agentPyPI | < 0.15.0 | 0.15.0 |
Affected products
1- Range: 2026.4.23
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-pgp4-xr4j-h5cgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-9366ghsaADVISORY
- gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75ccnvdWEB
- github.com/NousResearch/hermes-agent/commit/0dee92df22bdc0cfbcad90ca954aa14916f018deghsaWEB
- vuldb.com/submit/812227nvdWEB
- vuldb.com/vuln/365329nvdWEB
- vuldb.com/vuln/365329/ctinvdWEB
News mentions
1- NousResearch Hermes Agent: Nine CVEs Disclosed in a Single Day Spanning Injection, Sandbox, and Auth FlawsVypr Intelligence · May 24, 2026