CVE-2026-77050 (GCVE-0-2026-77050)

Vulnerability from cvelistv5 – Published: 2026-10-06 13:34 – Updated: 2026-10-06 14:21
VLAI
Title
Potential denial-of-service vulnerability in get_supported_language_variant()
Summary
An issue was discovered in Django 6.1 before 6.1.2, 6.0 before 6.0.9, and 5.2 before 5.2.18. `django.utils.translation.get_supported_language_variant()` is subject to a potential denial-of-service attack when processing many distinct, very long language codes, which are retained as keys in an in-memory cache and consume process memory. Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected. Django would like to thank Gleb Lizunov for reporting this issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 14:20 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Impacted products
Vendor Product Version
djangoproject Django Affected: 6.1 , < 6.1.2 (python)
Unaffected: 6.1.2 (python)
Affected: 6.0 , < 6.0.9 (python)
Unaffected: 6.0.9 (python)
Affected: 5.2 , < 5.2.18 (python)
Unaffected: 5.2.18 (python)
Create a notification for this product.
Date Public
2026-10-06 08:00
Show details on NVD website

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                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                "version": "3.1"
              }
            },
            {
              "cvssV4_0": {
                "baseScore": 6.9,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-789",
                  "description": "CWE-789: Memory Allocation with Excessive Size Value",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-06T13:34:40.107Z",
            "orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
            "shortName": "DSF"
          },
          "references": [
            {
              "name": "Django security archive",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://docs.djangoproject.com/en/dev/releases/security/"
            },
            {
              "name": "Django releases announcements",
              "tags": [
                "mailing-list"
              ],
              "url": "https://groups.google.com/g/django-announce"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/django/django/commit/c88b304cc2d90fc37d3bd1f5f3829706fa6c13bc"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/django/django/commit/7e878b0f8bd42260903e6a0d38996a93b0474a0b"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/django/django/commit/3d32ee80ae52745d686bf94d3555000ddf073267"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/django/django/commit/02a69e3791e3df23d45ea4ea7e7fc489f0eef2be"
            },
            {
              "name": "Django security releases issued: 6.1.2, 6.0.9, and 5.2.18",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.djangoproject.com/weblog/2026/oct/06/security-releases/"
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "timeline": [
            {
              "lang": "en",
              "time": "2026-08-06T04:49:58.000Z",
              "value": "Initial report received."
            },
            {
              "lang": "en",
              "time": "2026-08-20T04:50:04.000Z",
              "value": "Vulnerability confirmed."
            },
            {
              "lang": "en",
              "time": "2026-10-06T08:00:00.000Z",
              "value": "Security release issued."
            }
          ],
          "title": "Potential denial-of-service vulnerability in get_supported_language_variant()",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "assignerShortName": "DSF",
        "cveId": "CVE-2026-77050",
        "datePublished": "2026-10-06T13:34:40.107Z",
        "dateReserved": "2026-08-20T09:29:37.560Z",
        "dateUpdated": "2026-10-06T14:21:29.655Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.

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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.


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