Private-data disclosure via cookie cache guard bypass
Published Jul 7, 2026 · Updated Jul 7, 2026
Information disclosure in Django 5.2 before 5.2.16 and 6.0 before 6.0.7 allows remote attackers to read private cached data. UpdateCacheMiddleware and cache_page() check for a cookie-free request before suppressing shared caching, so an unrelated incoming cookie bypasses the guard for responses that set a sensitive cookie and vary on Cookie. Exposure requires shared caching plus such a response and an incoming unrelated cookie; the cache can then serve private response data to another client.
Summary
What happened
Information disclosure in Django 5.2 before 5.2.16 and 6.0 before 6.0.7 allows remote attackers to read private cached data. UpdateCacheMiddleware and cache_page() check for a cookie-free request before suppressing shared caching, so an unrelated incoming cookie bypasses the guard for responses that set a sensitive cookie and vary on Cookie. Exposure requires shared caching plus such a response and an incoming unrelated cookie; the cache can then serve private response data to another client.
The record
- CVE
- CVE-2026-48588
- Published
- Jul 7, 2026
- Updated
- Jul 7, 2026
- Vendor
- Django Software Foundation
- Product
- Django
- Classifications
- CWE-524
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 7, 2026CVE publishedPublication date reported by the CVE source.
- Jul 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.2 <5.2.16
- Affected versionversion=6.0 <6.0.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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