CVE-2026-82020
7.6
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
Summary
Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages directing the agent's file-write tooling to overwrite the credential store without triggering any path-based protection, enabling credential tampering or unauthorized access.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| NousResearch | hermes-agent | 0.16.0 < 0.17.0 | affected |
| NousResearch | hermes-agent | 2026.6.5 < 2026.6.19 | affected |
Weaknesses
- CWE-552: Files or Directories Accessible to External Parties
References
- https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19
- https://github.com/NousResearch/hermes-agent/pull/45821
- https://github.com/NousResearch/hermes-agent/commit/da28d5d113956dcf803d5cff552a120740a96a59
- https://github.com/NousResearch/hermes-agent/commit/2b67e96aec2aa2abd5e94b544cda8e564c75f9f5
- https://www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-tool
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