CVE-2026-55202

A flaw was found in Tinyproxy. This vulnerability allows unauthenticated remote attackers to gain unauthorized access to internal proxy statistics or misroute requests. This is possible due to improper validation of the Host header during stathost detection, which can be exploited by injecting a...

Linux Distros Unpatched Vulnerability : CVE-2026-55202

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to...

Linux Distros Unpatched Vulnerability : CVE-2026-54388

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content- Length headers with differing values, forwarding all...

UBUNTU-CVE-2026-55202

Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly v...

UBUNTU-CVE-2026-54387

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile...

UBUNTU-CVE-2026-54388

Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject req...

tinyproxy-1.11.3-3.1 on GA media (moderate)

tinyproxy-1.11.3-3.1 on GA media Announcement ID: openSUSE-SU-2026:11060-1 Rating: moderate Cross-References: CVE-2026-54387 CVE-2026-54388 CVE-2026-55202 Affected Products: openSUSE Tumbleweed An update that solves 3 vulnerabilities can now be installed. Description: These are all security issue...

OPENSUSE-SU-2026:11060-1 tinyproxy-1.11.3-3.1 on GA media

These are all security issues fixed in the tinyproxy-1.11.3-3.1 package on the GA media of openSUSE Tumbleweed...

DEBIAN-CVE-2026-55202

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...

DEBIAN-CVE-2026-54388

Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content-Length headers with differing values, forwarding all duplicate headers to the backend while using the first value to determine how many request body bytes to consume. Remote attackers can...

CVE-2026-54388

Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content-Length headers with differing values, forwarding all duplicate headers to the backend while using the first value to determine how many request body bytes to consume. Remote attackers can...

CVE-2026-54387

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-54388

Tinyproxy (≤ 1.11.3) is affected by CVE-2026-54388. The issue occurs when a request contains multiple Content-Length headers with differing values: Tinyproxy forwards all duplicate headers to the backend but uses the first value to determine how many body bytes to consume. This desynchronizes pro...

CVE-2026-54387 Tinyproxy - HTTP Request Smuggling via CL/TE Desynchronization

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

EUVD-2026-37789

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-54387

CVE-2026-54387 affects Tinyproxy up to version 1.11.3. It fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to consume the request body. This desynchronizes frontend/backend parsers and can enab...

CVE-2026-54387

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-55202

Tinyproxy (up to version 1.11.3) contains a vulnerability in stathost detection where the Host header is not properly validated. This allows unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation, potentially misrouting req...

EUVD-2026-37786

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...

CVE-2026-55202 Tinyproxy - Stathost Detection Bypass via Host Header Manipulation

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...