SSRF in Nousresearch Hermes-Agent
CVE-2026-18775
A vulnerability has been found in NousResearch hermes-agent up to 0.16.0. This vulnerability affects the function browser_snapshot of the file tools/browser_tool.py of the component Browser Tooling. Such manipulation leads to server-side request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.8% 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: 0.004 · change: 0.000
Affected products
- Nousresearch Hermes-Agent — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/385785 (technical-description, vdb-entry)
- vuldb.com/vuln/385785/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-18775 (third-party-advisory)
- vuldb.com/submit/856877 (third-party-advisory)
- gist.github.com/YLChen-007/2e5bf7fa58113967807425032234cc89 (exploit)
Frequently asked questions
- What is CVE-2026-18775?
- CVE-2026-18775 is a medium-severity vulnerability in Nousresearch Hermes-Agent, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-08-04.
- How severe is CVE-2026-18775?
- Medium severity. CVSS v3 base score is 6.3 out of 10.