Quick answers
- Is CVE-2026-85105 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85105 being exploited in the wild.
- How severe is CVE-2026-85105?
- High severity, with a CVSS score of 7.3, published 3 September 2026.
- Which products and versions are affected?
- NousResearch Hermes Agent 0.18.0.
- Is there a fix for CVE-2026-85105?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-85105 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-85105?
- Check whether you run NousResearch Hermes Agent at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an authorization bypass (CWE-307/CWE-863) in the _sess_nowait function within s71.py of hermes-agent's Session Management component. The flaw allows attackers to manipulate the session_id argument to circumvent authorization controls. The attack vector is network-based and requires no prior authentication. An attacker can remotely exploit this to gain unauthorized access to session-protected resources or operations. No patch information is currently available as the vendor did not respond to early disclosure attempts.
Affected products
- NousResearch hermes-agent 0.18.0
Timeline
- 2026-09-03: disclosed