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.
Metrics
Affected Vendors & Products
References
History
Wed, 03 Jun 2026 16:30:00 +0000
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ssvc
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Wed, 03 Jun 2026 15:45:00 +0000
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Djangoproject
Djangoproject django |
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Djangoproject
Djangoproject django |
Wed, 03 Jun 2026 14:15:00 +0000
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| Description | 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. | |
| Title | Potential exposure of private data via missing Vary: Authorization in UpdateCacheMiddleware | |
| Weaknesses | CWE-524 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: DSF
Published: 2026-06-03T13:16:38.456Z
Updated: 2026-06-03T15:47:18.140Z
Reserved: 2026-04-01T18:21:23.779Z
Link: CVE-2026-35193
Updated: 2026-06-03T15:47:14.925Z
Status : Received
Published: 2026-06-03T14:16:41.247
Modified: 2026-06-03T14:16:41.247
Link: CVE-2026-35193
No data.