# CVE-2026-34475: varnish: Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle...

CVE-2026-34475 is fixed in varnish on 1 platform by DEBIAN-CVE-2026-34475 (version 7.7.0-3+deb13u2), released March 27, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-34475
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 27, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | varnish Debian 13.5 (trixie) | 7.7.0-3+deb13u2 | [DEBIAN-CVE-2026-34475](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34475.md) | Mar 27, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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