Auth bypass in Nousresearch Hermes-Agent
CVE-2026-10548
A security flaw has been discovered in NousResearch hermes-agent up to 2026.4.23. This affects the function _sync_anthropic_entry_from_credentials_file of the file agent/credential_pool.py of the component Credential Pool Synchronization. The manipulation results in improper authentication. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.001 (2.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Nousresearch Hermes-Agent — versions 2026.4.0, 2026.4.1, 2026.4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/367645 (technical-description, vdb-entry)
- vuldb.com/vuln/367645/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-10548 (third-party-advisory)
- vuldb.com/submit/822026 (third-party-advisory)
- gist.github.com/YLChen-007/caf38652afeccbbd53a9d77152b6198d (exploit)
Frequently asked questions
- What is CVE-2026-10548?
- CVE-2026-10548 is a medium-severity vulnerability in Nousresearch Hermes-Agent, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-06-02.
- How severe is CVE-2026-10548?
- Medium severity. CVSS v3 base score is 5.3 out of 10.