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CVE-2026-48588— Potential exposure of private data via cached Set-Cookie response

Quick assessment

Affected
djangoproject Django
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

djangoproject django是djangoproject基金会开源的一个Web应用开发框架。 Django 6.0.7之前版本和5.2.16之前版本存在日志信息泄露漏洞，该漏洞源于UpdateCacheMiddleware和cache_page()装饰器在传入请求携带无关cookie时缓存基于cookie变化的响应，导致远程攻击者从共享缓存中读取私有数据。

CVSS 4.2 · Low EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 4

VendorProduct Version RangeStatus
djangoproject Django 6.0< 6.0.7 affected
6.0.7 unaffected
5.2< 5.2.16 affected
5.2.16 unaffected
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I. Basic Information for CVE-2026-48588

Vulnerability Information
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Vulnerability Title
Potential exposure of private data via cached Set-Cookie response
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. `UpdateCacheMiddleware` and the `cache_page()` decorator cache responses that vary on cookies when the incoming request carries unrelated cookies, which allows remote attackers to read private data from the shared cache. 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 Chris Whyland for reporting this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过缓存导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Django 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
djangoproject django是djangoproject基金会开源的一个Web应用开发框架。 Django 6.0.7之前版本和5.2.16之前版本存在日志信息泄露漏洞，该漏洞源于UpdateCacheMiddleware和cache_page()装饰器在传入请求携带无关cookie时缓存基于cookie变化的响应，导致远程攻击者从共享缓存中读取私有数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
djangoproject Django 6.0 ~ 6.0.7 -

II. Public POCs for CVE-2026-48588

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III. Intelligence Information for CVE-2026-48588

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Vendor Advisories for CVE-2026-48588 (2)

Mailing List Discussions for CVE-2026-48588 (1)

Same Patch Batch · djangoproject · 2026-07-07 · 3 CVEs total

CVE-2026-53878 6.1 MEDIUM Header injection possibility since DomainNameValidator accepted newlines in input
CVE-2026-53877 4.8 MEDIUM Heap buffer over-read in GDALRaster

IV. Related Vulnerabilities

Same product: Django
Same vendor: djangoproject
Same weakness: CWE-524

V. Comments for CVE-2026-48588

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