PatchSiren cyber security CVE debrief
CVE-2026-18993 NousResearch CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-06T05:16:41.380Z and has not been modified since then. The vulnerability affects NousResearch hermes-agent up to version 0.16.0, specifically in the file hermes-agent/model_tools.py, potentially allowing improper access controls. This issue can be exploited remotely, and the exploit is now public. Users of affected versions should review and apply any available patches. The vulnerability class is related to improper access controls, and the likely operational impact is low due to the low CVSS score. However, defenders should verify the existence and scope of the vulnerability in their environments.
- Vendor
- NousResearch
- Product
- hermes-agent
- CVSS
- LOW 2.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-06
- Original CVE updated
- 2026-08-06
- Advisory published
- 2026-08-06
- Advisory updated
- 2026-08-06
Who should care
Users of NousResearch hermes-agent up to version 0.16.0 should review and apply any available patches. This includes operators, platform administrators, vulnerability management teams, and security teams who need to assess the impact on their systems and plan for remediation. Additionally, defenders should verify the existence and scope of the vulnerability in their environments, focusing on systems that could be affected by improper access controls in the hermes-agent/model_tools.py file.
Technical summary
A vulnerability was detected in NousResearch hermes-agent up to 0.16.0, affecting some unknown functionality of the file hermes-agent/model_tools.py, potentially allowing improper access controls. This issue can be exploited remotely, and the exploit is now public. Users of affected versions should review and apply any available patches. The vulnerability is related to improper access controls in the hermes-agent/model_tools.py file, which could allow unauthorized access. Defenders should focus on validating affected systems, reviewing official advisories, and monitoring for public exploit availability.
Defensive priority
Low-priority defensive review recommended due to limited details and low CVSS score.
Recommended defensive actions
- Review the official CVE record for updates
- Verify affected systems and versions
- Monitor for public exploit availability
- Apply vendor patches or recommended mitigations
- Review compensating controls for exposed systems
- Conduct asset inventory to identify potentially affected systems
- Track exceptions and retest remediated assets
Evidence notes
Evidence is limited; verify vulnerability existence and scope through primary official records and vendor statements. The vulnerability affects NousResearch hermes-agent up to version 0.16.0, specifically in the file hermes-agent/model_tools.py. Users should focus on validating affected systems, reviewing official advisories, and monitoring for public exploit availability.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-06T05:16:41.380Z and has not been modified since then.