How severe is CVE-2019-16772?

CVE-2019-16772 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2019-16772 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16772?

CVE-2019-16772 affects Serialize-to-js Project Serialize-to-js. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16772?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-16772 published?

CVE-2019-16772 was published on 2019-12-07 and last updated on 2026-06-17.

CVE-2019-16772

CVE-2019-16772 is a low-severity vulnerability in Serialize-to-js Project Serialize-to-js with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Serialize-to-js Project Serialize-to-js
Published: 2019-12-07
Last modified: 2026-06-17

Description

The serialize-to-js NPM package before version 3.0.1 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.

Frequently asked questions

What is CVE-2019-16772?: The serialize-to-js NPM package before version 3.0.1 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.
How severe is CVE-2019-16772?: CVE-2019-16772 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2019-16772 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16772?: CVE-2019-16772 affects Serialize-to-js Project Serialize-to-js. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16772?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-16772 published?: CVE-2019-16772 was published on 2019-12-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:serialize-to-js_project:serialize-to-js:*:*:*:*:*:node.js:*:*

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