Dashboard / CVE-2026-34475

CVE-2026-34475

CRITICAL
INFO Priority: 0.02 BB Relevance: 80/100
Published: 2026-03-27 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (13)

VendorProductVersion
varnish-software varnish_enterprise < 6.0.15
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
varnish-software varnish_enterprise 6.0.16
vinyl-cache vinyl_cache < 8.0.1

References & Advisories (1)

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.21%
Raw Score 0.002100
Percentile 11.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00210
2026-10-28
0.00210

Intelligence Sources

nvd ref →

External Links