Skip to main content

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2026-97711

Low
2.3/10

Summary

Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. In versions 7.1.1 prior to 7.1.2, function values serialized by serialize-javascript are not fully protected against script-closing tags in attacker-influenced function source because `SCRIPT_CLOSE_REGEXP` can consume a second closing tag inside one match. When the serialized function is embedded in a script element, the surviving closing tag terminates the element early and causes the remaining output to be parsed as HTML, enabling cross-site scripting in the page origin. Only function values are affected; ordinary data values and `options.isJSON` output are unaffected. This issue is fixed in version 7.1.2.

  • LOW
  • NETWORK
  • PASSIVE
  • NONE

CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

References

Advisory Timeline

  • Published