5.4

CVE-2019-16769: Affected versions of serialize-javascript are vulnerable to Cross-site Scripting (XSS)

Modified
AliasesGHSA-h9rv-jmmf-4pgx
Published 05-12-2019Last modified 05-08-2024

Vulnerability summary

CVE-2019-16769 is a medium (CVSS 5.4) vulnerability in verizon serialize-javascript. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 56.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.2, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.80%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
RHSA-2020:2796SUSE-RU-2020:0671-1SUSE-SU-2020:0671-1

Timeline

  1. 05-12-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.80%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.80% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Npm1 product
  • serialize-javascript< 2.1.1
Verizon1 product
Yahoo1 product

3 vendors · 3 products

References

4 links