CVE-2026-71963

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/NousResearch/hermes-agent/commit/f6234d00c5d59450adea1d7edd30ad3859375c79
https://github.com/NousResearch/hermes-agent/pull/101483
https://www.manifold.security/blog/ai-coding-agents-git-hijack
https://www.vulncheck.com/advisories/hermes-agent-rce-via-git-core-fsmonitor-config-injection

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-03 16:18

Updated : 2026-09-08 20:18

NVD link : CVE-2026-71963

Mitre link : CVE-2026-71963

CVE.ORG link : CVE-2026-71963

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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