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TI-2026-56609 Aliases CVE-2026-82020GHSA-rrm3-x23q-98qc

Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool

Priority LOW 36CWE-552Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
High
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-552.

Summary

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages directing the agent's file-write tooling to overwrite the credential store without triggering any path-based protection, enabling credential tampering or unauthorized access.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00435 38th percentileScored 2026-11-07
Fix Fixed hermes-agent (NousResearch): 0.17.0, 2026.6.19

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NousResearchhermes-agent0.16.0 to before 0.17.0; 2026.6.5 to before 2026.6.190.17.0, 2026.6.19Patch availableCNA
  • hermes-agent VendorNousResearch Affected 0.16.0 to before 0.17.0; 2026.6.5 to before 2026.6.19 Fixed in 0.17.0, 2026.6.19 Patch available CNA

Remediation

  • Fix · CNA hermes-agent (NousResearch) Fixed in 0.17.0, 2026.6.19

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82020
  2. 2026-10-03 Alias added: GHSA-rrm3-x23q-98qc

References

Patch 3

Other 1

  • TI-2026-50258 Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection CVSS 4.0HIGH 8.6
  • TI-2026-12325 NousResearch hermes-agent Live Webhook Endpoint base.py extract_media path traversal CVSS 4.0MEDIUM 6.9
  • TI-2026-08962 NousResearch hermes-agent Webhook Endpoint feishu.py _handle_webhook_request resource consumption CVSS 4.0MEDIUM 6.9
  • TI-2026-08959 NousResearch hermes-agent run_agent.py _compress_context injection CVSS 4.0MEDIUM 6.9
  • TI-2026-08958 NousResearch hermes-agent skills_tool.py skill_view injection CVSS 4.0MEDIUM 6.9
  • TI-2026-08218 NousResearch hermes-agent Environment Variable code_execution_tool.py execute_code sandbox CVSS 4.0MEDIUM 6.9
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences