{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.8.5"
              },
              {
                "fixed": "0.8.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "91324e8de762702e97b0ac5c8e36271d644d8642"
            }
          ],
          "repo": "https://github.com/glanceapp/glance",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-348"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63770.json"
  },
  "details": "Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers can manipulate the leftmost value of the X-Forwarded-For header to make each login attempt appear to originate from a distinct IP address, preventing the per-IP failed-login counter from reaching the lockout threshold and enabling unlimited credential guessing against the authentication endpoint.",
  "id": "CVE-2026-63770",
  "modified": "2026-07-25T03:56:22.194576001Z",
  "published": "2026-07-20T19:02:36.910Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63770.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63770"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypass"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/glanceapp/glance/issues/1031"
    },
    {
      "type": "FIX",
      "url": "https://github.com/glanceapp/glance/pull/1033"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/glanceapp/glance"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass"
}