Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.6epss 0.9%
exploitation probability
0.9%top 43% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
NousResearch · hermes-agentpublic PoCs found — 1
cve_referencewww.manifold.security/blog/ai-coding-agents-git-hijackunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/NousResearch/hermes-agent/commit/f6234d00c5d59450adea1d7edd30ad3859375c79https://github.com/NousResearch/hermes-agent/pull/101483https://www.manifold.security/blog/ai-coding-agents-git-hijackhttps://www.vulncheck.com/advisories/hermes-agent-rce-via-git-core-fsmonitor-config-injection