CVE-2026-6907 Potential exposure of private data due to incorrect handling of Vary: * in UpdateCacheMiddleware

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. django.middleware.cache.UpdateCacheMiddleware erroneously caches requests where the Vary header contained an asterisk ''. This can lead to private data being stored and served. Earlier, unsupported Django series such as 5.0.x,...

CVE-2026-6907

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. django.middleware.cache.UpdateCacheMiddleware erroneously caches requests where the Vary header contained an asterisk ''. This can lead to private data being stored and served. Earlier, unsupported Django series such as 5.0.x,...

PT-2026-37078

Name of the Vulnerable Software and Affected Versions Django versions 6.0 through 6.0.4 Django versions 5.2 through 5.2.13 Description An issue in django.middleware.cache.UpdateCacheMiddleware causes requests where the Vary header contains an asterisk '' to be erroneously cached. This behavior ca...