CVE-2026-71963 (GCVE-0-2026-71963)

Vulnerability from cvelistv5 – Published: 2026-09-03 15:19 – Updated: 2026-09-03 15:41 X_Open Source
VLAI
Title
Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection
Summary
Hermes Agent 0.18.2 through 0.21.0, fixed in commit f6234d0, contains a remote code execution vulnerability that allows attackers to execute arbitrary OS commands by supplying a malicious repository with a crafted .git/config that sets core.fsmonitor to an attacker-controlled command. When a user opens the malicious repository and sends any message, the agent triggers a git status index refresh which executes the injected command in the user's process context, exposing the full environment including configured provider API keys.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:41 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
NousResearch hermes-agent Affected: 0.18.2 , ≤ 0.21.0 (semver)
Unaffected: f6234d00c5d59450adea1d7edd30ad3859375c79 (git)
guessed Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
Francisco Rosales
Show details on NVD website
To clipboard 

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