{
  "published": "2026-09-02T22:13:30Z",
  "modified": "2026-09-04T08:56:52Z",
  "schema_version": "1.7.5",
  "id": "CGA-jcmf-cc6w-4cqm",
  "severity": [
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
    }
  ],
  "upstream": [
    "CVE-2026-72818",
    "GHSA-qx2g-xrx7-vfh8"
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://pypi.org"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72818.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nltk/nltk/releases/tag/v3.10.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72818"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nltk-tweettokenizer-url-pattern-backtracks-catastrophically-on-naked-domain-like-input"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nltk/nltk/issues/3704"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nltk/nltk"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/nltk/nltk/blob/3.9.4/nltk/tokenize/casual.py"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Chainguard",
        "name": "open-webui",
        "purl": "pkg:apk/chainguard/open-webui?arch=aarch64"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.11.3-r1"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "components": [
          {
            "component_name": "nltk",
            "component_version": "3.10.0",
            "component_type": "python",
            "component_location": "/usr/share/open-webui/lib/python3.11/site-packages/nltk-3.10.0.dist-info/METADATA",
            "component_purl": "pkg:pypi/nltk@3.10.0",
            "latest_event_status": "fixed",
            "latest_event_timestamp": "2026-09-04T08:56:52Z"
          }
        ]
      }
    },
    {
      "package": {
        "ecosystem": "Wolfi",
        "name": "open-webui",
        "purl": "pkg:apk/wolfi/open-webui?arch=aarch64"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.11.3-r1"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "components": [
          {
            "component_name": "nltk",
            "component_version": "3.10.0",
            "component_type": "python",
            "component_location": "/usr/share/open-webui/lib/python3.11/site-packages/nltk-3.10.0.dist-info/METADATA",
            "component_purl": "pkg:pypi/nltk@3.10.0",
            "latest_event_status": "fixed",
            "latest_event_timestamp": "2026-09-04T08:56:52Z"
          }
        ]
      }
    }
  ]
}