hermes-agent has an Injection issue
A vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | hermes-agent | <= 0.19.0 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-10221
- https://github.com/NousResearch/hermes-agent/issues/26979
- https://github.com/NousResearch/hermes-agent/pull/69860
- https://github.com/NousResearch/hermes-agent/commit/2ca38e5df43411afe11aedfc34bfd71a2eecd4bb
- https://gist.github.com/YLChen-007/d343fcfe2c009cd45f56dc475fd5ac03
- https://github.com/NousResearch/hermes-agent
- https://vuldb.com/cve/CVE-2026-10221
- https://vuldb.com/submit/822019
- https://vuldb.com/vuln/367500
- https://vuldb.com/vuln/367500/cti
- https://pypi.org/project/hermes-agent
- https://github.com/advisories/GHSA-xq8w-9jvx-gm3v
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-74- Platform
- Python (PyPI)
- Package
hermes-agent- Disclosed
- 01.06.2026
- Updated
- 11.10.2026 14:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3577 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-xq8w-9jvx-gm3v - CC BY 4.0
Vulnerability history: hermes-agent
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 05.2026 06.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 6
- Low 3
Disclosures per year
- 2026: 10
-
hermes-agent has an Injection issue this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.