{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "5.15"
              },
              {
                "fixed": "2026.6"
              },
              {
                "introduced": "0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a6bf0680599015a4b73b7992a3f60ad2451b415a"
            },
            {
              "fixed": "37bbc41a979f5d3d20d8a3976784af8a3ca6c91a"
            }
          ],
          "repo": "https://github.com/weblateorg/weblate",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-vmfc-9982-2m45"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50127.json"
  },
  "details": "Weblate is a web based localization tool. From version 5.15 to before version 2026.6, Weblate's VCS_RESTRICT_PRIVATE did not properly account for some transitional IPv6 ranges, multicast addresses, or some semi-private IPv4 ranges, which allowed some addresses to bypass private range restrictions. This issue has been patched in version 2026.6.",
  "id": "CVE-2026-50127",
  "modified": "2026-07-08T05:37:59.198827091Z",
  "published": "2026-06-10T19:56:37.829Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50127.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50127"
    },
    {
      "type": "FIX",
      "url": "https://github.com/WeblateOrg/weblate/pull/19768"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)"
}