CVE-2026-17432: Improper Access Controls in NousResearch hermes-agent
Affects NousResearch hermes-agentSource CVE Database V5
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:PWhat to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| NousResearchhermes-agent | Affected
| Fixed in– |
GitHub Actionsnousresearch/hermes-agentpkg:github/nousresearch/hermes-agentOther threats | Affected
| Fixed in– |
CPE configurations (1)
cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*
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AI-suggested
A patch identified by commit 490c486ff65b766d9de0fe0e6f26e1778aaa8fb3 is available and applying it is advised to resolve the issue. Patch status is not explicitly confirmed in the vendor advisory, so verify the patch availability and applicability with the vendor or official sources before deployment.
Description
CVE-2026-17432 is a low-severity vulnerability in NousResearch hermes-agent version 2026.6.5 involving improper access controls in the SimpleX Gateway Authorization component. The issue arises from manipulation of the contactId argument in the file hermes-agent/plugins/platforms/simplex/adapter.py. Exploitation requires high complexity and no privileges, but the exploit is publicly available. A patch identified by commit 490c486ff65b766d9de0fe0e6f26e1778aaa8fb3 is advised to resolve the issue.
Impact
The vulnerability allows remote attackers to bypass access controls by manipulating the contactId argument, potentially leading to unauthorized access within the affected component. However, the low CVSS score and high attack complexity indicate limited impact and difficulty in exploitation. No privileges or user interaction are required for the attack.
Summary
This vulnerability in NousResearch hermes-agent 2026.6.5 affects an unknown functionality within the SimpleX Gateway Authorization component, specifically in the file hermes-agent/plugins/platforms/simplex/adapter.py. Improper access controls allow remote attackers to manipulate the contactId argument, potentially bypassing intended authorization checks. The attack complexity is high, and no user interaction or privileges are required. Although an exploit is publicly available, the CVSS 4.0 base score is low (2.3). A patch identified by commit 490c486ff65b766d9de0fe0e6f26e1778aaa8fb3 exists, but no official remediation level is stated.
References
- vuldb.com/vuln/383065 (opens in a new tab)
- vuldb.com/vuln/383065/cti (opens in a new tab)
- vuldb.com/cve/CVE-2026-17432 (opens in a new tab)
- vuldb.com/submit/862424 (opens in a new tab)
- github.com/NousResearch/hermes-agent/issues/44730 (opens in a new tab)
- github.com/NousResearch/hermes-agent/pull/41246 (opens in a new tab)
- github.com/NousResearch/hermes-agent/issues/44729 (opens in a new tab)
- github.com/NousResearch/hermes-agent/commit/490c486ff65b766d9de0fe0e6f26e1778aaa8fb3 (opens in a new tab)
- github.com/NousResearch/hermes-agent/ (opens in a new tab)