CVE-2026-6830 Nesquena Hermes WebUI Environment Variable Credential Leakage via Profile Switch
Attackers can access sensitive API keys from one profile in another due to environment variables not being cleared during profile switching.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6830?
CVE-2026-6830 is a medium-severity vulnerability in nesquena hermes-webui, published on 21 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
nesquena hermes-webui contains an environment variable leakage vulnerability where profile switching does not clear environment variables from the previously active profile before loading the next profile. Attackers or users can exploit additive dotenv reload behavior to access provider API keys and other sensitive secrets from one profile context in another profile, breaking expected security isolation between profiles.
Which versions are affected by CVE-2026-6830?
How do I fix CVE-2026-6830?
No fix has been published for CVE-2026-6830 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6830 being exploited?
There is no known exploitation of CVE-2026-6830 in the wild and no public exploit code.
Sources
Also known as GHSA-vvfr-g83f-8qcv.