What is CVE-2026-18773?

CVE-2026-18773 is a medium-severity vulnerability in Nousresearch Hermes-agent, classified under Improper Authorization. CVSS score: 6.3/10. Published 2026-08-04.

How severe is CVE-2026-18773?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Nousresearch Hermes-agent

CVE-2026-18773

A vulnerability was detected in NousResearch hermes-agent up to 2026.6.5. Affected by this issue is the function _check_slash_access of the file gateway/run.py of the component Quick Command Handler. The manipulation results in incorrect a…

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.

Affected products

Nousresearch Hermes-agent — versions 2026.6.0, 2026.6.1, 2026.6.2

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-18773?: CVE-2026-18773 is a medium-severity vulnerability in Nousresearch Hermes-agent, classified under Improper Authorization. CVSS score: 6.3/10. Published 2026-08-04.
How severe is CVE-2026-18773?: Medium severity. CVSS v3 base score is 6.3 out of 10.