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{"bugzilla": {"description": "Varnish Cache: Varnish Cache and Varnish Enterprise: Cache poisoning and authentication bypass via unchecked URL handling", "id": "2452408", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452408"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-1286", "details": ["Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass.", "A flaw was found in Varnish Cache and Varnish Enterprise. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 requests with a path of `/` in the URL. This mishandling of URLs, specifically in unchecked `req.url` scenarios, could lead to cache poisoning, where an attacker manipulates cached content, or an authentication bypass, allowing unauthorized access."], "name": "CVE-2026-34475", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "redhat-user-workloads/varnish-7-10-0", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "redhat-user-workloads/varnish-7-10-1", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "varnish", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "varnish-modules", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "redhat-user-workloads/varnish-6-8-10", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "varnish:6/varnish", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "varnish:6/varnish-modules", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "redhat-user-workloads/varnish-6-9-6", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "redhat-user-workloads/varnish-6-9-7", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "varnish", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "varnish-modules", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-27T19:40:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-34475\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34475\nhttps://vinyl-cache.org/security/VSV00018.html"], "threat_severity": "Moderate"}

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