CVE-2019-16772: The serialize-to-js NPM package before version 3.0.1 is vulnerable to Cross-site Scripting (XSS)

Routine

LOW 3.1UPGRADE

CVE-2019-16772 is a low-severity flaw (CVSS 3.1) affecting serialize-to-js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 oth

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-12-07
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: serialize-to-js project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-12-07 00:15 UTCPublished CVE record published
2026-06-17 02:22 UTCUpdated Record last modified

serialize-to-js project serialize-to-js UPGRADE

Affected: < 3.0.1

Fixed in: 3.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls serialize-to-js

2. UPGRADE to 3.0.1

npm install serialize-to-js@">=3.0.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-16772?

serialize-to-js: upgrade to 3.0.1. Exact commands for each OS are on this page.

Is CVE-2019-16772 being exploited?

CVE-2019-16772 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-16772 affect?

CVE-2019-16772 affects serialize-to-js. Severity is low (CVSS 3.1). 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 envir

How urgent is CVE-2019-16772?

Priority 24/100. No elevated risk signals yet.

Software pages

Node.js vulnerabilities · npm packages vulnerabilities

Related CVEs

CVE-2017-15871 HIGH 7.5 UPGRADE The deserialize function in serialize-to-js through 1.1.1 allows attackers to cause a denial of service via ve

References

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