{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2026.6.5"
              },
              {
                "fixed": "2026.6.19"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "3c231eb3979ab9c57d5cd6d02f1d577a3b718b43"
            },
            {
              "fixed": "2b67e96aec2aa2abd5e94b544cda8e564c75f9f5"
            },
            {
              "fixed": "da28d5d113956dcf803d5cff552a120740a96a59"
            },
            {
              "fixed": "2bd1977d8fad185c9b4be47884f7e87f1add0ce3"
            }
          ],
          "repo": "https://github.com/nousresearch/hermes-agent",
          "type": "GIT"
        }
      ]
    }
  ],
  "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": [
      {
        "extracted_events": [
          {
            "introduced": "0.16.0"
          },
          {
            "fixed": "0.17.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "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.",
  "id": "CVE-2026-82020",
  "modified": "2026-09-02T03:30:50.407849503Z",
  "published": "2026-08-28T18:47:06.377Z",
  "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"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Hermes Agent 0.16.0 \u003c 0.17.0 Credential Store Overwrite via File-Write Tool"
}