Auth bypass in Nousresearch Hermes-Agent
CVE-2026-85105
A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is the function _sess_nowait of the file s71.py of the component Session Management. This manipulation of the argument session_id causes authorization bypass. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Nousresearch Hermes-Agent — versions 0.18.0
Weakness classification (CWE)
References
- vuldb.com/cve/CVE-2026-85105 (third-party-advisory)
- vuldb.com/submit/885131 (third-party-advisory)
- vuldb.com/vuln/398312 (technical-description, vdb-entry)
- vuldb.com/vuln/398312/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-85105?
- CVE-2026-85105 is a high-severity vulnerability in Nousresearch Hermes-Agent, classified under Improper Authorization. CVSS score: 7.3/10. Published 2026-09-03.
- How severe is CVE-2026-85105?
- High severity. CVSS v3 base score is 7.3 out of 10.