9router 0.4.1 through 0.5.99 contains a configuration injection vulnerability in the POST /api/cli-tools/hermes-settings endpoint that allows authenticated dashboard users to inject arbitrary keys into the Hermes Agent config.yaml file. Attackers can submit a baseUrl containing double quotes and newlines to add hooks_auto_accept and a hooks.post_llm_call shell command, which Hermes Agent executes without approval after an LLM call.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 7.3NVD modified 2026-10-13 12:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://github.com/decolua/9router
- https://github.com/decolua/9router/blob/a99cf57239ff778b61e434c2786009d5ed1c412c/src/app/api/cli-tools/hermes-settings/route.js#L185-L223
- https://github.com/decolua/9router/blob/a99cf57239ff778b61e434c2786009d5ed1c412c/src/app/api/cli-tools/hermes-settings/route.js#L20-L35
- https://hackmd.io/@haind/9router-hermes-config-injection
- https://www.vulncheck.com/advisories/9router-0.4.1-through-0.5.99-config-injection-rce-via-hermes-settings-endpoint
- https://hackmd.io/@haind/9router-hermes-config-injection