CVE-2026-34475

| EUVD-2026-16801 MEDIUM
2026-03-27 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 27, 2026 - 20:22 vuln.today
EUVD ID Assigned
Mar 27, 2026 - 20:22 euvd
EUVD-2026-16801
CVE Published
Mar 27, 2026 - 20:16 nvd
MEDIUM 5.4

Tags

Authentication Bypass

Description

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.

Analysis

Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12 mishandle HTTP/1.1 URLs with a root path (/) in unchecked req.url scenarios, enabling cache poisoning and authentication bypass attacks. Unauthenticated remote attackers can exploit this with moderate complexity to poison cached content or bypass authentication controls affecting downstream clients. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

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CVE-2026-34475 vulnerability details – vuln.today
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