FKIE_CVE-2026-48587

Vulnerability from fkie_nvd - Published: 2026-06-03 14:16 - Updated: 2026-07-21 19:10
Severity
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.utils.cache.has_vary_header()` in Django does not strip leading or trailing whitespace from `Vary` response header values before comparison, which allows remote attackers to read cached responses via requests to URLs whose responses contain whitespace-padded Vary header values. 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 Navid Rezazadeh for reporting this issue.
References
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://docs.djangoproject.com/en/dev/releases/security/Patch, Vendor Advisory
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://groups.google.com/g/django-announceRelease Notes
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://www.djangoproject.com/weblog/2026/jun/03/security-releases/Patch, Vendor Advisory
Impacted products
Vendor Product Version
djangoproject django *
djangoproject django *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "048C450F-F81F-4A1D-9BF7-DC36FF26988E",
              "versionEndExcluding": "5.2.15",
              "versionStartIncluding": "5.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BC9BA685-D9CE-406E-A479-9C444E8EADB3",
              "versionEndExcluding": "6.0.6",
              "versionStartIncluding": "6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6.\n`django.utils.cache.has_vary_header()` in Django does not strip leading or trailing whitespace from `Vary` response header values before comparison, which allows remote attackers to read cached responses via requests to URLs whose responses contain whitespace-padded Vary header values.\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 Navid Rezazadeh for reporting this issue."
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 un problema en Django 5.2 anterior a 5.2.15 y 6.0 anterior a 6.0.6.\n\u0027django.utils.cache.has_vary_header()\u0027 en Django no elimina los espacios en blanco iniciales o finales de los valores del encabezado de respuesta \u0027Vary\u0027 antes de la comparaci\u00f3n, lo que permite a atacantes remotos leer respuestas en cach\u00e9 a trav\u00e9s de solicitudes a URL cuyas respuestas contienen valores de encabezado Vary rellenados con espacios en blanco.\nSeries de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y tambi\u00e9n podr\u00edan estar afectadas.\nDjango desea agradecer a Navid Rezazadeh por informar sobre este problema."
    }
  ],
  "id": "CVE-2026-48587",
  "lastModified": "2026-07-21T19:10:00.107",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.3,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48587",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-03T15:47:33.121791Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-03T14:16:44.983",
  "references": [
    {
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://docs.djangoproject.com/en/dev/releases/security/"
    },
    {
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "tags": [
        "Release Notes"
      ],
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://www.djangoproject.com/weblog/2026/jun/03/security-releases/"
    }
  ],
  "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1023"
        }
      ],
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "type": "Secondary"
    }
  ]
}



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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.


Detection rules are retrieved from Rulezet.