{"id":"CVE-2026-115897","revision":"206e55780f7d48d18a08e2b56964547d","records":[{"revision":"206e55780f7d48d18a08e2b56964547d","observedAt":"2026-10-23T22:48:20.692+00:00","statement":{"source":"cve-program","id":"CVE-2026-115897","aliases":[],"title":"Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script at the end of a serialized function body","description":"Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function source text ends exactly at that prefix. Because each function body is escaped independently, a delimiter supplied by surrounding serialized output can terminate an HTML script element, and a later serialized value supplies injected markup that becomes a live element in the page. Exploitation requires control of a serialized function's source text, such as through a spoofed toString(). This issue is fixed in version 7.1.3.","state":0,"publishedAt":"2026-10-23T21:37:41.097+00:00","modifiedAt":"2026-10-23T21:37:41.097+00:00","affected":[{"ecosystem":"Vendor product","name":"serialize-javascript","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"yahoo\",\n                    \"product\": \"serialize-javascript\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 7.1.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":2.1,"severity":"LOW"}],"references":["https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v","https://github.com/yahoo/serialize-javascript/pull/235","https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61","https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115897","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-115897","identifiers":["CVE-2026-115897"]},"retained":false,"historicalAffected":[]}],"coverage":[]}