Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-06-06 08:39

Modified

2026-09-10 15:46

Summary

Signed cookie salt namespace collision in django.http.HttpRequest.get_signed_cookie

Details

An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. django.http.HttpRequest.get_signed_cookie in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct (name, salt) pairs that produce the same concatenation. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Peng Zhou for reporting this issue.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "django",
        "purl": "pkg:bitnami/django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2.0"
            },
            {
              "fixed": "5.2.15"
            },
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.0.6"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-6873"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15.\n`django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Peng Zhou for reporting this issue.",
  "id": "BIT-django-2026-6873",
  "modified": "2026-09-10T15:46:03.895Z",
  "published": "2026-06-06T08:39:22.320Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://docs.djangoproject.com/en/dev/releases/security/"
    },
    {
      "type": "ARTICLE",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6873"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.djangoproject.com/weblog/2026/jun/03/security-releases/"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Signed cookie salt namespace collision in django.http.HttpRequest.get_signed_cookie"
}

CVE-2026-6873 (GCVE-0-2026-6873)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:16 – Updated: 2026-06-03 15:43

Title

Signed cookie salt namespace collision in django.http.HttpRequest.get_signed_cookie

Summary

An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Peng Zhou for reporting this issue.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 15:43 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

DSF mitre root

References

3 references

URL	Tags
https://docs.djangoproject.com/en/dev/releases/se…	vendor-advisory
https://groups.google.com/g/django-announce	mailing-list
https://www.djangoproject.com/weblog/2026/jun/03/…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
djangoproject	Django	Affected: 6.0 , < 6.0.6 (python) Unaffected: 6.0.6 (python) Affected: 5.2 , < 5.2.15 (python) Unaffected: 5.2.15 (python)

Date Public

2026-06-03 08:00

Credits

Peng Zhou Paul McMillan Natalia Bidart

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6873",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T15:43:52.491634Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-03T15:43:58.829Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/project/Django/",
          "defaultStatus": "unaffected",
          "packageName": "django",
          "product": "Django",
          "repo": "https://github.com/django/django/",
          "vendor": "djangoproject",
          "versions": [
            {
              "lessThan": "6.0.6",
              "status": "affected",
              "version": "6.0",
              "versionType": "python"
            },
            {
              "status": "unaffected",
              "version": "6.0.6",
              "versionType": "python"
            },
            {
              "lessThan": "5.2.15",
              "status": "affected",
              "version": "5.2",
              "versionType": "python"
            },
            {
              "status": "unaffected",
              "version": "5.2.15",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Peng Zhou"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Paul McMillan"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Natalia Bidart"
        }
      ],
      "datePublic": "2026-06-03T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15.\u003c/p\u003e\u003cp\u003e\u003ccode\u003edjango.http.HttpRequest.get_signed_cookie\u003c/code\u003e in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct \u003ccode\u003e(name, salt)\u003c/code\u003e pairs that produce the same concatenation.\u003c/p\u003e\u003cp\u003eEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\u003c/p\u003e\u003cp\u003eDjango would like to thank Peng Zhou for reporting this issue.\u003c/p\u003e"
            }
          ],
          "value": "An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15.\n`django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Peng Zhou for reporting this issue."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-475",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-475: Signature Spoofing by Improper Validation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://docs.djangoproject.com/en/dev/internals/security/#security-issue-severity-levels",
              "value": "low"
            },
            "type": "Django severity rating"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        },
        {
          "cvssV4_0": {
            "baseScore": 2.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T13:16:03.924Z",
        "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"
        },
        {
          "name": "Django security releases issued: 6.0.6 and 5.2.15",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.djangoproject.com/weblog/2026/jun/03/security-releases/"
        }
      ],
      "source": {
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          "lang": "en",
          "time": "2026-03-27T00:00:00.000Z",
          "value": "Initial report received."
        },
        {
          "lang": "en",
          "time": "2026-05-12T00:00:00.000Z",
          "value": "Vulnerability confirmed."
        },
        {
          "lang": "en",
          "time": "2026-06-03T08:00:00.000Z",
          "value": "Security release issued."
        }
      ],
      "title": "Signed cookie salt namespace collision in django.http.HttpRequest.get_signed_cookie",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
    "assignerShortName": "DSF",
    "cveId": "CVE-2026-6873",
    "datePublished": "2026-06-03T13:16:03.924Z",
    "dateReserved": "2026-04-22T18:12:39.603Z",
    "dateUpdated": "2026-06-03T15:43:58.829Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerability from bitnami_vulndb

CVE-2026-6873 (GCVE-0-2026-6873)

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