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.
Published: 2026-06-17
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 23 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 18 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Tinyproxy
Tinyproxy tinyproxy
Vendors & Products Tinyproxy
Tinyproxy tinyproxy

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
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.
Title Tinyproxy - Stathost Detection Bypass via Host Header Manipulation
First Time appeared Tinyproxy Project
Tinyproxy Project tinyproxy
Weaknesses CWE-290
CPEs cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:*
Vendors & Products Tinyproxy Project
Tinyproxy Project tinyproxy
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Tinyproxy Tinyproxy
Tinyproxy Project Tinyproxy
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-23T02:03:50.009Z

Reserved: 2026-06-16T15:53:37.764Z

Link: CVE-2026-55202

cve-icon Vulnrichment

Updated: 2026-06-23T02:03:38.281Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T21:30:16Z

Weaknesses