Vulnerability-Lookup

GHSA-QPC8-7FXC-CM4P

Vulnerability from github – Published: 2026-06-03 15:30 – Updated: 2026-06-03 15:30

Details

An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. django.middleware.cache.UpdateCacheMiddleware in Django does not add Authorization to the Vary response header for requests bearing that header without Cache-Control: public, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL. 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 Shai Berger for reporting this issue.

Severity

3.1 (Low)


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

2.3 (Low)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-35193"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-524"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-03T14:16:41Z",
    "severity": "LOW"
  },
  "details": "An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6.\n`django.middleware.cache.UpdateCacheMiddleware` in Django does not add `Authorization` to the `Vary` response header for requests bearing that header without `Cache-Control: public`, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL.\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 Shai Berger for reporting this issue.",
  "id": "GHSA-qpc8-7fxc-cm4p",
  "modified": "2026-06-03T15:30:43Z",
  "published": "2026-06-03T15:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35193"
    },
    {
      "type": "WEB",
      "url": "https://docs.djangoproject.com/en/dev/releases/security"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2026/jun/03/security-releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-35193 (GCVE-0-2026-35193)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:16 – Updated: 2026-06-03 15:47

Title

Potential exposure of private data via missing Vary: Authorization in UpdateCacheMiddleware

Summary

An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.middleware.cache.UpdateCacheMiddleware` in Django does not add `Authorization` to the `Vary` response header for requests bearing that header without `Cache-Control: public`, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL. 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 Shai Berger for reporting this issue.

Severity

3.1 (Low)


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

2.3 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-524 - Use of Cache Containing Sensitive Information

Assigner

DSF

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

Shai Berger Jacob Walls Natalia Bidart

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-35193",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T15:47:08.153480Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-03T15:47:18.140Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://pypi.org/project/Django/",
          "defaultStatus": "unaffected",
          "packageName": "django",
          "product": "Django",
          "repo": "https://github.com/django/django/",
          "vendor": "djangoproject",
          "versions": [
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              "lessThan": "6.0.6",
              "status": "affected",
              "version": "6.0",
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            },
            {
              "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": "Shai Berger"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Jacob Walls"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Natalia Bidart"
        }
      ],
      "datePublic": "2026-06-03T08:00:00.000Z",
      "descriptions": [
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          "value": "An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6.\n`django.middleware.cache.UpdateCacheMiddleware` in Django does not add `Authorization` to the `Vary` response header for requests bearing that header without `Cache-Control: public`, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL.\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 Shai Berger for reporting this issue."
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      "impacts": [
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              "lang": "en",
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            }
          ]
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      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://docs.djangoproject.com/en/dev/internals/security/#security-issue-severity-levels",
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        },
        {
          "cvssV3_1": {
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
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        },
        {
          "cvssV4_0": {
            "baseScore": 2.3,
            "baseSeverity": "LOW",
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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T13:16:38.456Z",
        "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/"
        },
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          "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": {
        "discovery": "INTERNAL"
      },
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          "lang": "en",
          "time": "2026-03-24T00:00:00.000Z",
          "value": "Initial report received."
        },
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          "lang": "en",
          "time": "2026-04-28T00:00:00.000Z",
          "value": "Vulnerability confirmed."
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          "lang": "en",
          "time": "2026-06-03T08:00:00.000Z",
          "value": "Security release issued."
        }
      ],
      "title": "Potential exposure of private data via missing Vary: Authorization in UpdateCacheMiddleware",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
    "assignerShortName": "DSF",
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    "datePublished": "2026-06-03T13:16:38.456Z",
    "dateReserved": "2026-04-01T18:21:23.779Z",
    "dateUpdated": "2026-06-03T15:47:18.140Z",
    "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.

Action not permitted

GHSA-QPC8-7FXC-CM4P

CVE-2026-35193 (GCVE-0-2026-35193)

Tags

Sightings

Nomenclature