CVE-2026-55202

High

Description

Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.

SeverityHigh

CVSS8.2

Exploit probability—

ProductTinyproxy

PublishedJun 17, 2026

First seenJun 17, 2026

Weakness typeCWE-290CWE-290

How to fix

Patches

github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce

Affected products

Product	Affected versions	Fixed in
tinyproxy tinyproxy	v ≤ 1.11.3	—

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