CVE-2023-43665 (GCVE-0-2023-43665)
Vulnerability from cvelistv5 – Published: 2023-11-03 00:00 – Updated: 2025-11-04 17:12
VLAI
Summary
In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-04T17:12:41.936Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://groups.google.com/forum/#%21forum/django-announce"
},
{
"tags": [
"x_transferred"
],
"url": "https://docs.djangoproject.com/en/4.2/releases/security/"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.djangoproject.com/weblog/2023/oct/04/security-releases/"
},
{
"name": "FEDORA-2023-a67af7d8f4",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20231221-0001/"
},
{
"name": "FEDORA-2024-84fbbbb914",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
},
{
"name": "[oss-security] 20240304 Django: CVE-2024-27351: Potential regular expression denial-of-service in django.utils.text.Truncator.words()",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2024/03/04/1"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-05-01T17:09:51.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"url": "https://groups.google.com/forum/#%21forum/django-announce"
},
{
"url": "https://docs.djangoproject.com/en/4.2/releases/security/"
},
{
"url": "https://www.djangoproject.com/weblog/2023/oct/04/security-releases/"
},
{
"name": "FEDORA-2023-a67af7d8f4",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/"
},
{
"url": "https://security.netapp.com/advisory/ntap-20231221-0001/"
},
{
"name": "FEDORA-2024-84fbbbb914",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
},
{
"name": "[oss-security] 20240304 Django: CVE-2024-27351: Potential regular expression denial-of-service in django.utils.text.Truncator.words()",
"tags": [
"mailing-list"
],
"url": "http://www.openwall.com/lists/oss-security/2024/03/04/1"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2023-43665",
"datePublished": "2023-11-03T00:00:00.000Z",
"dateReserved": "2023-09-20T00:00:00.000Z",
"dateUpdated": "2025-11-04T17:12:41.936Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-43665",
"date": "2026-05-31",
"epss": "0.0279",
"percentile": "0.86341"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2023-43665\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2023-11-03T05:15:30.047\",\"lastModified\":\"2025-11-04T18:15:41.420\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.\"},{\"lang\":\"es\",\"value\":\"En Django 3.2 anterior a 3.2.22, 4.1 anterior a 4.1.12 y 4.2 anterior a 4.2.6, los m\u00e9todos django.utils.text.Truncator chars() y palabras() (cuando se usan con html=True) est\u00e1n sujetos a un potencial Ataque DoS (denegaci\u00f3n de servicio) a trav\u00e9s de ciertas entradas con texto HTML muy largo y potencialmente mal formado. Los m\u00e9todos chars() y palabras() se utilizan para implementar los filtros de plantilla truncatechars_html y truncatewords_html, que por tanto tambi\u00e9n son vulnerables. NOTA: este problema existe debido a una soluci\u00f3n incompleta para CVE-2019-14232.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1284\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.2\",\"versionEndExcluding\":\"3.2.22\",\"matchCriteriaId\":\"8BA393E1-3182-4225-9C9E-9ADEFDB870B5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.1\",\"versionEndExcluding\":\"4.1.12\",\"matchCriteriaId\":\"D6A68CC8-3ABF-4E38-97AB-9AE50A6FBACF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.2\",\"versionEndExcluding\":\"4.2.6\",\"matchCriteriaId\":\"80AE2E8A-697C-4495-84C0-A439EAA7D657\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2024/03/04/1\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://docs.djangoproject.com/en/4.2/releases/security/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://groups.google.com/forum/#%21forum/django-announce\",\"source\":\"cve@mitre.org\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20231221-0001/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.djangoproject.com/weblog/2023/oct/04/security-releases/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/03/04/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://docs.djangoproject.com/en/4.2/releases/security/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://groups.google.com/forum/#%21forum/django-announce\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20231221-0001/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.djangoproject.com/weblog/2023/oct/04/security-releases/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…