CVE-2026-108593CWE-94code-injection

CVE-2026-108593

Medium · published October 10, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
17.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
7.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00268 · 17.9th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-10-10T23:16Z
References (6)
https://github.com/decolua/9router/blob/a99cf57239ff778b61e434c2786009d5ed1c412c/src/app/api/cli-tools/hermes-settings/route.js#L185-L223 · [email protected]https://github.com/decolua/9router/blob/a99cf57239ff778b61e434c2786009d5ed1c412c/src/app/api/cli-tools/hermes-settings/route.js#L20-L35 · [email protected]https://hackmd.io/@haind/9router-hermes-config-injection · [email protected]https://www.vulncheck.com/advisories/9router-0.4.1-through-0.5.99-config-injection-rce-via-hermes-settings-endpoint · [email protected]https://hackmd.io/@haind/9router-hermes-config-injection · 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/decolua/9router · [email protected]
EPSS history
Timeline
  • 12 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 10 OCT 18:16Z
    9router 0.4.1 through 0.5.99 Config Injection RCE via hermes-settings Endpoint
    cvelistv5
  • 10 OCT 18:16Z
    9router 0.4.1 through 0.5.99 Config Injection RCE via hermes-settings Endpoint
    cvelistv5