{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f6234d00c5d59450adea1d7edd30ad3859375c79"
            }
          ],
          "repo": "https://github.com/nousresearch/hermes-agent",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-78"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71963.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "0.18.2"
          },
          {
            "last_affected": "0.21.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "0.18.2"
          },
          {
            "fixed": "0.21.0"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Hermes Agent 0.18.2 through 0.21.0, fixed in commit f6234d0, contains a remote code execution vulnerability that allows attackers to execute arbitrary OS commands by supplying a malicious repository with a crafted .git/config that sets core.fsmonitor to an attacker-controlled command. When a user opens the malicious repository and sends any message, the agent triggers a git status index refresh which executes the injected command in the user's process context, exposing the full environment including configured provider API keys.",
  "id": "CVE-2026-71963",
  "modified": "2026-09-10T03:30:40.909820944Z",
  "published": "2026-09-03T15:19:30.310Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71963.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71963"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/hermes-agent-rce-via-git-core-fsmonitor-config-injection"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/NousResearch/hermes-agent/pull/101483"
    },
    {
      "type": "FIX",
      "url": "https://github.com/NousResearch/hermes-agent/commit/f6234d00c5d59450adea1d7edd30ad3859375c79"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/NousResearch/hermes-agent"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.manifold.security/blog/ai-coding-agents-git-hijack"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection"
}