{"id":"CVE-2026-82020","summary":"Hermes Agent 0.16.0 \u003c 0.17.0 Credential Store Overwrite via File-Write Tool","details":"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.","modified":"2026-09-02T03:30:50.407849503Z","published":"2026-08-28T18:47:06.377Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-552"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82020.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.16.0"},{"fixed":"0.17.0"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82020.json"},{"type":"ADVISORY","url":"https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82020"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-tool"},{"type":"FIX","url":"https://github.com/NousResearch/hermes-agent/commit/2b67e96aec2aa2abd5e94b544cda8e564c75f9f5"},{"type":"FIX","url":"https://github.com/NousResearch/hermes-agent/commit/da28d5d113956dcf803d5cff552a120740a96a59"},{"type":"FIX","url":"https://github.com/NousResearch/hermes-agent/pull/45821"},{"type":"PACKAGE","url":"https://github.com/NousResearch/hermes-agent"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nousresearch/hermes-agent","events":[{"introduced":"3c231eb3979ab9c57d5cd6d02f1d577a3b718b43"},{"fixed":"2b67e96aec2aa2abd5e94b544cda8e564c75f9f5"},{"fixed":"da28d5d113956dcf803d5cff552a120740a96a59"},{"fixed":"2bd1977d8fad185c9b4be47884f7e87f1add0ce3"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"2026.6.5"},{"fixed":"2026.6.19"}]}}],"versions":["v2026.6.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82020.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}