{"schema_version":"1.9.0","id":"CVE-2025-65026","published":"2025-11-19T17:33:11.469Z","modified":"2026-08-12T03:51:16.526237686Z","aliases":["GHSA-hcpf-qv9m-vfgp","GO-2025-4139"],"related":["SUSE-SU-2025:4395-1","openSUSE-SU-2026:21483-1"],"summary":"esm.sh CDN service has JS Template Literal Injection in CSS-to-JavaScript","details":"esm.sh is a nobuild content delivery network(CDN) for modern web development. Prior to version 136, The esm.sh CDN service contains a Template Literal Injection vulnerability (CWE-94) in its CSS-to-JavaScript module conversion feature. When a CSS file is requested with the ?module query parameter, esm.sh converts it to a JavaScript module by embedding the CSS content directly into a template literal without proper sanitization. An attacker can inject malicious JavaScript code using ${...} expressions within CSS files, which will execute when the module is imported by victim applications. This enables Cross-Site Scripting (XSS) in browsers and Remote Code Execution (RCE) in Electron applications. This issue has been patched in version 136.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/esm-dev/esm.sh","events":[{"introduced":"0"},{"fixed":"1ad31b6352bb0a064ece812f6f360e4850e16051"},{"fixed":"87d2f6497574bf4448641a5527a3ac2beba5fd6c"}],"database_specific":{"cpe":"cpe:2.3:a:esm:esm.sh:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"136"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v136_1","v136","v135_1","v135","v134","v133","v132","v131","v130","v129","v128","v127","v126","v125","v124","v123","v122","v121","v120","v119","v117","v116","v115","v114","v113","v112","v111","v110","v109","v108","v107","v106","v105","v104","v103","v102","v101","v100","v99","v98","v97","v96","v95","v94","v93","v92","v91","v90","v89","v88","v87","v86","v85","v84","v83","v82","v81","v80","v79","v78","v77","v76","v75","v74","v73","v72","v71","v70","v69","v68","v67","v66","v65","v64","v63","v62","v61","v60","v59","v57","v56","v55","v53","v52","v51","v50","v49","v47","v46","v45","v44","v43","v41","v40","v39","v38","v37","v35","v34"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-65026.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65026.json"},{"type":"ADVISORY","url":"https://github.com/esm-dev/esm.sh/security/advisories/GHSA-hcpf-qv9m-vfgp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-65026"},{"type":"FIX","url":"https://github.com/esm-dev/esm.sh/commit/87d2f6497574bf4448641a5527a3ac2beba5fd6c"}],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-94"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65026.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}