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CVE-2023-36053 (GCVE-0-2023-36053)

Vulnerability from cvelistv5 – Published: 2023-07-03 00:00 – Updated: 2025-11-04 17:12
VLAI
Summary
In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-22 16:03 UTC
CWE
  • n/a
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version CPE status
debian debian_linux Affected: 10.0
    cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Create a notification for this product.
fedoraproject fedora Affected: 37
    cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Create a notification for this product.
djangoproject django Affected: *
    cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T10:19:05+00:00",
      "cve": "CVE-2023-36053",
      "id": "CVE-2023-36053",
      "initial_release_date": "2023-07-03T08:00:00+00:00",
      "product_status:fixed": "24",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "2424",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "python-django: Potential regular expression denial of service vulnerability in EmailValidator/URLValidator",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-36053.json",
      "version": "3"
    },
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      "current_release_date": "2026-08-25T02:39:05Z",
      "cve": "CVE-2023-36053",
      "id": "CVE-2023-36053",
      "initial_release_date": "2023-07-12T01:57:36Z",
      "product_status:recommended": "28",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-36053",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-36053.json",
      "version": "17"
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.