CVE-2026-34475
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductVarnish-software Varnish Enterprise
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-180CWE-180
How to fix
Update
- vinyl-cache vinyl_cache8.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| varnish-software varnish_enterprise | v ≤ 6.0.15, 6.0.16 | — |
| vinyl-cache vinyl_cache | v < 8.0.1 | 8.0.1 |
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