CVE-2019-16769

low-risk
Published 2019-12-05

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.

Do I need to act?

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0.41% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.2/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Serialize-Javascript

Affected Vendors

Verizon

References (2)

Third Party Advisory https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-h9rv-jmmf...
Third Party Advisory https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-h9rv-jmmf...
21
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal