CVE-2026-82020
Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool
- State
- Published
- Severity
- 7.6 High
- Published
- Aug 28, 2026
- Updated
- Sep 1, 2026
- Reserved
- Aug 27, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.6 High | 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 | VulnCheck |
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-552 Files or Directories Accessible to External Parties
Affected Products
| Product | Versions |
|---|---|
hermes-agentNousResearch |
|
References
- Hermes Agent v2026.6.19 Release Notesrelease-notes
- Pull Requestissue-trackingpatch
- Patch Commit (1)patch
- Patch Commit (2)patch
- https://www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-toolthird-party-advisory
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