{"id":"CVE-2026-55202","title":"Tinyproxy - Stathost Detection Bypass via Host Header Manipulation","summary":"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 …","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-290"],"vendor":"tinyproxy","product":"tinyproxy","affected":["tinyproxy <= 1.11.3"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-23T02:03:31.233580Z"},"published":"2026-06-17","updated":"2026-10-29","sourceUpdated":"2026-10-29T21:15:45.574Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55202","references":[{"url":"https://github.com/tinyproxy/tinyproxy/pull/606","label":"Pull Request"},{"url":"https://github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/tinyproxy-stathost-detection-bypass-via-host-header-manipulation","label":"VulnCheck Advisory: Tinyproxy - Stathost Detection Bypass via Host Header Manipulation"}],"tags":["cve.org"],"epss":0.00381,"epssPercentile":0.32149,"ingestedAt":"2026-11-03T08:39:35.555Z","slug":"CVE-2026-55202","body":"## Overview\n\nTinyproxy 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.\n\n## Affected\n\n- `tinyproxy <= 1.11.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}