{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.8.1"
              },
              {
                "fixed": "4.10.11"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "a0b7d759ac8bfdd499dcf1f137c6df2fbcb3dd1c"
            },
            {
              "fixed": "273b8839b91cb74dfd083644efea18849a3fcee1"
            }
          ],
          "repo": "https://github.com/langbot-app/langbot",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-331"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90562.json"
  },
  "details": "LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and gain account access.",
  "id": "CVE-2026-90562",
  "modified": "2026-09-18T03:31:03.084910946Z",
  "published": "2026-09-13T10:45:36.684Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90562.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90562"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/langbot-before-4.10.11-authentication-bypass-via-weak-recovery-key"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/langbot-app/LangBot/issues/2392"
    },
    {
      "type": "FIX",
      "url": "https://github.com/langbot-app/LangBot/commit/267232c24f93c515d6fd3f7f81c0676066ab1ab8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langbot-app/LangBot"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/api/http/controller/groups/user.py"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/core/stages/genkeys.py"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key"
}