{"id":"CVE-2026-103896","revision":"cdaa1d97bba64ea9997a27e21b2fc3d8","records":[{"revision":"cdaa1d97bba64ea9997a27e21b2fc3d8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-103896","aliases":[],"title":"10Web Booster <= 2.34.5 - Unauthenticated Limited File Write / Cache Poisoning via Query-string Parameter Traversal in Page-Cache Path","description":"The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to a limited file write via path traversal in versions up to, and including, 2.34.5 This is due to the OptimizerWebPageCache::get_cache_file_dir() function concatenating raw, unsanitized $_GET parameter names and values into the on-disk cache path, and the cache_content() sink calling mkdir() and file_put_contents() on the result with no realpath containment check — unlike the sibling delete_page_cache(), which does perform one. This makes it possible for unauthenticated attackers to create arbitrary directories (mode 0777, recursively) outside the cache root and write a cached page into them. The write is LIMITED: the filename is always 'source.html', so the extension is fixed, and the content is the rendered page buffer rather than attacker-supplied data. PHP files cannot be written and code execution is not possible; the demonstrated impact is cache poisoning and arbitrary directory creation.","state":0,"publishedAt":"2026-10-16T05:30:24.365+00:00","modifiedAt":"2026-10-16T15:09:39.142+00:00","affected":[{"ecosystem":"Vendor product","name":"10Web Booster – Website speed optimization, Cache & Page Speed optimizer","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"10web\",\n                    \"product\": \"10Web Booster – Website speed optimization, Cache & Page Speed optimizer\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"2.34.5\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":"HIGH"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/83e672e7-2483-46e9-ae16-a9e7ccc4bcb8?source=cve","https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L205","https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L190","https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L312","https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageValidations.php#L299","https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-103896","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-103896","identifiers":["CVE-2026-103896"]},"retained":false,"historicalAffected":[]}],"coverage":[]}