VULNERABILITY INTELLIGENCE
CVE-2026-115897
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-10-23
Last modified2026-10-26
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.
Weakness classification
- security-advisories@github.com: CWE-79