CVE-2019-16769

Description

The serialize-javascript npm package before version 2.1.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.

CVSS Metrics

• v3.1•MEDIUM•Score: 4.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
• v3.1•MEDIUM•Score: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
• v2.0•LOW•Score: 3.5AV:N/AC:M/Au:S/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.41%• Percentile: 61%

Techniques & Countermeasures

• CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

  The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Affected Systems

• Npm•serialize-javascript

  < 2.1.1

• verizon•serialize-javascript

  < 2.1.1

• yahoo•serialize-javascript

  ≥ < 2.1.1, < 2.1.1

References (4)

• https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-h9rv-jmmf-4pgx
• https://nvd.nist.gov/vuln/detail/CVE-2019-16769
• https://github.com/advisories/GHSA-h9rv-jmmf-4pgx
• https://www.npmjs.com/advisories/1426