CVE-2026-82020: NousResearch hermes-agent

Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool

CVSS 7.6 HighEPSS 0.0043 · 37th percentile

Published by the CVE Program (CNA: VulnCheck) at 28 Aug 2026, 18:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
NousResearch	hermes-agent pkg:github/NousResearch/hermes-agent	affected 0.16.0 to before 0.17.0 semver affected 2026.6.5 to before 2026.6.19 custom Other versions: affected

Identifiers

CVE-2026-82020

CNA

VulnCheck

Weakness (CWE)

CWE-552

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.6	High	4.0	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
6.8	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0043, the 37th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 28 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19 release-notes
github.com/NousResearch/hermes-agent/pull/45821 issue-trackingpatch
github.com/NousResearch/hermes-agent/commit/da28d5d113956dcf803d5cff552a120740a96a59 patch
github.com/NousResearch/hermes-agent/commit/2b67e96aec2aa2abd5e94b544cda8e564c75f9f5 patch
www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-tool third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.