CVE-2026-18773: Incorrect Authorization in NousResearch hermes-agent
A vulnerability was detected in NousResearch hermes-agent up to 2026.6.5. Affected by this issue is the function _check_slash_access of the file gateway/run.py of the component Quick Command Handler. The manipulation results in incorrect authorization. The attack can be launched 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.
AI Analysis
Technical Summary
This vulnerability affects the _check_slash_access function in the gateway/run.py file of the Quick Command Handler component in NousResearch hermes-agent versions 2026.6.0 through 2026.6.5. The issue results in incorrect authorization, allowing remote attackers to potentially perform unauthorized actions. The vendor was contacted but did not respond, and no remediation or patch is currently documented. An exploit is publicly available, increasing the risk of exploitation.
Potential Impact
The vulnerability allows remote attackers to bypass authorization controls in the affected component, potentially leading to unauthorized command execution or access within the hermes-agent environment. The CVSS 4.0 score of 5.3 reflects a medium severity impact with network attack vector, low complexity, no privileges required, and no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should monitor for updates from NousResearch. Until a patch is released, consider restricting network access to the hermes-agent service to trusted sources to reduce exposure.
CVE-2026-18773: Incorrect Authorization in NousResearch hermes-agent
Description
A vulnerability was detected in NousResearch hermes-agent up to 2026.6.5. Affected by this issue is the function _check_slash_access of the file gateway/run.py of the component Quick Command Handler. The manipulation results in incorrect authorization. The attack can be launched 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 v4.0
Score 5.3medium
Affected software
pkg:github/nousresearch/hermes-agentcpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the _check_slash_access function in the gateway/run.py file of the Quick Command Handler component in NousResearch hermes-agent versions 2026.6.0 through 2026.6.5. The issue results in incorrect authorization, allowing remote attackers to potentially perform unauthorized actions. The vendor was contacted but did not respond, and no remediation or patch is currently documented. An exploit is publicly available, increasing the risk of exploitation.
Potential Impact
The vulnerability allows remote attackers to bypass authorization controls in the affected component, potentially leading to unauthorized command execution or access within the hermes-agent environment. The CVSS 4.0 score of 5.3 reflects a medium severity impact with network attack vector, low complexity, no privileges required, and no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should monitor for updates from NousResearch. Until a patch is released, consider restricting network access to the hermes-agent service to trusted sources to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-04T07:35:35.152Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a72084abf8831d5390c1516
Added to database: 08/04/2026, 15:42:02 UTC
Last enriched: 08/04/2026, 16:01:16 UTC
Last updated: 08/04/2026, 17:11:46 UTC
Views: 2
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