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Security advisory

Type: advisorySources: OSVCVE: CVE-2019-14232

An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2019-14232
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:09 UTC · Revision 1

Source evidence

CVE-2019-14232

core-osv · Original source

Published 2 Aug 2019, 15:15 UTC

An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.

osv:CVE-2019-14232
Complete source record
{
  "id": "6e5c31031fc1fb2e506314a5a628e4da0d744a30f8afd9d422a85c2b9f1ba4ac",
  "url": "https://osv.dev/vulnerability/CVE-2019-14232",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-14232",
    "summary": "An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.",
    "evidence": "osv:CVE-2019-14232",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-14232",
      "aliases": [
        "CVE-2019-14232",
        "GHSA-c4qh-4vgv-qc6g",
        "PYSEC-2019-11"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/django/django",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c669cf279ae7b3e02a61db4fb077030a4db80e4f"
                },
                {
                  "fixed": "974897759e9afc4cc56fb87e12319fa9697e93c9"
                },
                {
                  "introduced": "df591468251ed489a3e147d7c359f387f4effe66"
                },
                {
                  "fixed": "ff9dcc0867eba90e9ab1b07a4b3eb79928717918"
                },
                {
                  "introduced": "2a62cdcfec85938f40abb2e9e6a9ff497e02afe8"
                },
                {
                  "fixed": "8687fbe034ac5eec20e0948b98eb8a2f0b1431a1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.11"
                      },
                      {
                        "fixed": "1.11.23"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1"
                      },
                      {
                        "fixed": "2.1.11"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.2"
                      },
                      {
                        "fixed": "2.2.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-14232.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:25.275226017Z",
      "provider": "osv",
      "references": [
        "https://groups.google.com/forum/#%21topic/django-announce/jIoju2-KLDs",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STVX7X7IDWAH5SKE6MBMY3TEI6ZODBTK/",
        "https://seclists.org/bugtraq/2019/Aug/15",
        "https://security.gentoo.org/glsa/202004-17",
        "https://security.netapp.com/advisory/ntap-20190828-0002/",
        "https://www.debian.org/security/2019/dsa-4498",
        "https://www.djangoproject.com/weblog/2019/aug/01/security-releases/",
        "https://docs.djangoproject.com/en/dev/releases/security/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-14232",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431318,
  "published_at": "2019-08-02T15:15:11.88+00:00"
}