{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/dunglas/frankenphp","product":"frankenphp","source":"CNA: VulnCheck","vendor":"php","versions":[{"lessThan":"1.13.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.13.2","versionType":"semver"}]}],"cveId":"CVE-2026-128021","cwes":["CWE-200"],"description":"FrankenPHP before 1.13.2 contains an information disclosure vulnerability that allows later clients to read earlier clients' libxml errors because worker mode never resets LIBXML(error_list) between requests. Attackers sending requests to the same worker thread can call libxml_get_errors() or libxml_get_last_error() to obtain other clients' parsed-document fragments and server filesystem paths.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":3.7,"severity":"low","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},{"score":6.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":3.7,"severity":"low","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1794565087737,"publishedAt":1794562447192,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/php/frankenphp/security/advisories/GHSA-4gfw-9v29-gp9h"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/frankenphp-before-1.13.2-information-disclosure-via-libxml-error-state-in-worker-mode"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/php/frankenphp/security/advisories/GHSA-4gfw-9v29-gp9h"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/frankenphp-before-1.13.2-information-disclosure-via-libxml-error-state-in-worker-mode"}],"remediation":[],"revision":"1c3ae758cfa3f468b0097318fe9dc9a5891c4173b3ddd7eef32a2b9b456cac1e","sources":[{"modifiedAt":1794562447192,"name":"CNA: VulnCheck","retrievedAt":1794564818505,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128021"},{"modifiedAt":1794565087737,"name":"NVD","retrievedAt":1794572250791,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128021"}],"ssvc":null,"status":"published","title":"FrankenPHP before 1.13.2 Information Disclosure via libxml Error State in Worker Mode","updatedAt":1794572250791}